LCIRC

Letter Circular 1128: Use of NIST name
1995

LCIRC 1128r1995
10.6028/NIST.LCIRC.1128r1995
Download PDF | Download Citation
Letter Circular 1136: the United States and the metric system
1992

LCIRC 1136
10.6028/NIST.LCIRC.1136
Download PDF | Download Citation
Letter Circular 1035: units and systems of weights and measures their origin, development, and present status
1985
Lewis V Judson, Louis E Barbrow
LCIRC 1035r1985
10.6028/NBS.LCIRC.1035r1985
Download PDF | Download Citation
Letter Circular 1128: NBS policy on use of its name in advertising
1982

LCIRC 1128
10.6028/NBS.LCIRC.1128
Download PDF | Download Citation
Letter Circular 1130: condition assessment of buildings
1982
Porter Driscoll, James Pielert
LCIRC 1130
10.6028/NBS.LCIRC.1130
Download PDF | Download Citation
Letter Circular 1132: the metric system of measurements (SI)
1982

LCIRC 1132
10.6028/NBS.LCIRC.1132
Download PDF | Download Citation
Letter Circular 1127: software development tools: a reference guide to a taxonomy of tool features
1981

LCIRC 1127
10.6028/NBS.LCIRC.1127
Download PDF | Download Citation
Letter Circular 1068: the National Bureau of Standards program in nondestructive evaluation
1980
Harold Berger
LCIRC 1068
10.6028/NBS.LCIRC.1068
Download PDF | Download Citation
Letter Circular 1092: the NBSDOE energy-related inventions program - synopsis of evaluation process
1980

LCIRC 1092
10.6028/NBS.LCIRC.1092
Download PDF | Download Citation
Letter Circular 1121: Mechanical Failures Prevention Group (MFPG) purpose, objectives, and organization
1980

LCIRC 1121
10.6028/NBS.LCIRC.1121
Download PDF | Download Citation
Letter Circular 1122: AASHTO materials reference laboratory
1980

LCIRC 1122
10.6028/NBS.LCIRC.1122
Download PDF | Download Citation
Letter Circular 1123: energy design economics
1980
Harold E Marshall, Roasalie T Ruegg, Forrest Wilson
LCIRC 1123
10.6028/NBS.LCIRC.1123
Download PDF | Download Citation
Letter Circular 1124: bioclimatic chart
1980

LCIRC 1124
10.6028/NBS.LCIRC.1124
Download PDF | Download Citation
Letter Circular 1125: metallurgy division
1980

LCIRC 1125
10.6028/NBS.LCIRC.1125
Download PDF | Download Citation
Letter Circular 1126: National Engineering Laboratory
1980

LCIRC 1126
10.6028/NBS.LCIRC.1126
Download PDF | Download Citation
Letter Circular 1080: NDE (nondestructive evaluation program0
1979

LCIRC 1080r1979
10.6028/NBS.LCIRC.1080r1979
Download PDF | Download Citation
Letter Circular 1086: National Bureau of Standards U.S. Department of Commerce research associate program
1979

LCIRC 1086
10.6028/NBS.LCIRC.1086
Download PDF | Download Citation
Letter Circular 1101: environmental design research division office staff
1979

LCIRC 1101
10.6028/NBS.LCIRC.1101
Download PDF | Download Citation
Letter Circular 1102: sensory environment staff
1979

LCIRC 1102
10.6028/NBS.LCIRC.1102
Download PDF | Download Citation
Letter Circular 1103: architectural research staff
1979

LCIRC 1103
10.6028/NBS.LCIRC.1103
Download PDF | Download Citation
Letter Circular 1104: building acoustics staff
1979

LCIRC 1104
10.6028/NBS.LCIRC.1104
Download PDF | Download Citation
Letter Circular 1106: occupant safety and security staff
1979

LCIRC 1106
10.6028/NBS.LCIRC.1106
Download PDF | Download Citation
Letter Circular 1107: for consumers, practical information based on scientific research from the National Bureau of Standards
1979

LCIRC 1107
10.6028/NBS.LCIRC.1107
Download PDF | Download Citation
Letter Circular 1108: knowledge, news, & facts you can use and enjoy
1979

LCIRC 1108
10.6028/NBS.LCIRC.1108
Download PDF | Download Citation
Letter Circular 1109: environmental design research division
1979

LCIRC 1109
10.6028/NBS.LCIRC.1109
Download PDF | Download Citation
Letter Circular 1110: architectural research group
1979

LCIRC 1110
10.6028/NBS.LCIRC.1110
Download PDF | Download Citation
Letter Circular 1111: sensory environment group
1979

LCIRC 1111
10.6028/NBS.LCIRC.1111
Download PDF | Download Citation
Letter Circular 1112: building safety & security group
1979

LCIRC 1112
10.6028/NBS.LCIRC.1112
Download PDF | Download Citation
Letter Circular 1113: building acoustics & community noise group
1979

LCIRC 1113
10.6028/NBS.LCIRC.1113
Download PDF | Download Citation
Letter Circular 1114: building safety and security research areas
1979

LCIRC 1114
10.6028/NBS.LCIRC.1114
Download PDF | Download Citation
Letter Circular 1115: sensory environment research areas
1979

LCIRC 1115
10.6028/NBS.LCIRC.1115
Download PDF | Download Citation
Letter Circular 1116: building acoustics and community noise research areas
1979

LCIRC 1116
10.6028/NBS.LCIRC.1116
Download PDF | Download Citation
Letter Circular 1117: architectural research areas
1979

LCIRC 1117
10.6028/NBS.LCIRC.1117
Download PDF | Download Citation
Letter Circular 1118: fracture & deformation division
1979

LCIRC 1118
10.6028/NBS.LCIRC.1118
Download PDF | Download Citation
Letter Circular 1119: solar technology for buildings publications
1979

LCIRC 1119
10.6028/NBS.LCIRC.1119
Download PDF | Download Citation
Letter Circular 1120: Guidelines for use of the modernized metric system (supersedes Letter Circular 1056)
1979

LCIRC 1120r1979
10.6028/NBS.LCIRC.1120r1979
Download PDF | Download Citation
Letter Circular 1093: the Norris Cotton Building, a living laboratory in energy conservation
1978

LCIRC 1093
10.6028/NBS.LCIRC.1093
Download PDF | Download Citation
Letter Circular 1094: NBS standards information service
1978

LCIRC 1094
10.6028/NBS.LCIRC.1094
Download PDF | Download Citation
Letter Circular 1095: films
1978

LCIRC 1095
10.6028/NBS.LCIRC.1095
Download PDF | Download Citation
Letter Circular 1096: applied economics program staff
1978

LCIRC 1096
10.6028/NBS.LCIRC.1096
Download PDF | Download Citation
Letter Circular 1097: applied economics program projects
1978

LCIRC 1097
10.6028/NBS.LCIRC.1097
Download PDF | Download Citation
Letter Circular 1098: preferred metric units for general use by the federal government
1978

LCIRC 1098
10.6028/NBS.LCIRC.1098
Download PDF | Download Citation
Letter Circular 1100: recommended reading for scientists and engineers
1978

LCIRC 1100
10.6028/NBS.LCIRC.1100
Download PDF | Download Citation
Letter Circular 1067-1: codes for the names of countries; ISO standard 3166American National Standard Z39.27
1977

LCIRC 1067-1
10.6028/NBS.LCIRC.1067-1
Download PDF | Download Citation
Letter Circular 1070: some references on metric information including a chart on all you need to know about metric (supersedes NBS special publication 389)
1977

LCIRC 1070
10.6028/NBS.LCIRC.1070
Download PDF | Download Citation
Letter Circular 1078: the metric system of measurement (SI)
1977

LCIRC 1078r1977
10.6028/NBS.LCIRC.1078r1977
Download PDF | Download Citation
Letter Circular 1079: home security alarms - what they are and how they work
1977

LCIRC 1079
10.6028/NBS.LCIRC.1079
Download PDF | Download Citation
Letter Circular 1080: NDE (nondestructive evaluation program0
1977

LCIRC 1080
10.6028/NBS.LCIRC.1080
Download PDF | Download Citation
Letter Circular 1081: fire research
1977

LCIRC 1081
10.6028/NBS.LCIRC.1081
Download PDF | Download Citation
Letter Circular 1082: a service manager's guide to saving energy in residential oil burners - optimizing nozzle size
1977

LCIRC 1082
10.6028/NBS.LCIRC.1082
Download PDF | Download Citation
Letter Circular 1083: NBS intergovernmental personal exchange program - an invitation to state and local governments and academic and public interest groups that serve them to join in research
1977

LCIRC 1083
10.6028/NBS.LCIRC.1083
Download PDF | Download Citation
Letter Circular 1085: how to improve the efficiency of your oil-fired furnace
1977

LCIRC 1085
10.6028/NBS.LCIRC.1085
Download PDF | Download Citation
Letter Circular 1088: La seguridad del hogar empieza en su puerta
1977

LCIRC 1088sp
10.6028/NBS.LCIRC.1088sp
Download PDF | Download Citation
Letter Circular 1091: building safety
1977

LCIRC 1091
10.6028/NBS.LCIRC.1091
Download PDF | Download Citation
Letter Circular 1120: NBS guidelines for use of the metric system
1977

LCIRC 1120r1977
10.6028/NBS.LCIRC.1120r1977
Download PDF | Download Citation
Letter Circular 1069: metric style guide for the news media
1976

LCIRC 1069
10.6028/NBS.LCIRC.1069
Download PDF | Download Citation
Letter Circular 1071: factors for high-precision conversion
1976

LCIRC 1071
10.6028/NBS.LCIRC.1071
Download PDF | Download Citation
Letter Circular 1072: air & water pollution
1976

LCIRC 1072
10.6028/NBS.LCIRC.1072
Download PDF | Download Citation
Letter Circular 1073: Institute for Computer Sciences & Technology
1976
Dennis Donovan
LCIRC 1073
10.6028/NBS.LCIRC.1073
Download PDF | Download Citation
Letter Circular 1074: smoke detectors - what they are and how they work
1976

LCIRC 1074
10.6028/NBS.LCIRC.1074
Download PDF | Download Citation
Letter Circular 1075: the Center for Consumer Product Technology, measurement technology for the marketplace
1976

LCIRC 1075
10.6028/NBS.LCIRC.1075
Download PDF | Download Citation
Letter Circular 1076: NBS Heat Division: an introduction
1976

LCIRC 1076
10.6028/NBS.LCIRC.1076
Download PDF | Download Citation
Letter Circular 1078: the metric system of measurement (SI)
1976

LCIRC 1078
10.6028/NBS.LCIRC.1078
Download PDF | Download Citation
Letter Circular 1088: home security starts at your door
1976

LCIRC 1088
10.6028/NBS.LCIRC.1088
Download PDF | Download Citation
Letter Circular 1017: standards for checking the calibration of spectrophotometers (200 to 1000 m?)
1967

LCIRC 1017r1967
10.6028/NBS.LCIRC.1017r1967
Download PDF | Download Citation
Letter Circular 1019: National Bureau of Standards reports
1966

LCIRC 1019r1966
10.6028/NBS.LCIRC.1019r1966
Download PDF | Download Citation
Letter Circular 1019: National Bureau of Standards reports
1965

LCIRC 1019r1965
10.6028/NBS.LCIRC.1019r1965
Download PDF | Download Citation
Letter Circular 888: FURS: general information
1964
Elizabeth R Hosterman
LCIRC 888r1964
10.6028/NBS.LCIRC.888r1964
Download PDF | Download Citation
Letter Circular 1019: National Bureau of Standards reports
1963

LCIRC 1019r1963
10.6028/NBS.LCIRC.1019r1963
Download PDF | Download Citation
Letter Circular 1036: standard light-sensitive paper for use in testing textiles for colorfastness to light
1963

LCIRC 1036r1963
10.6028/NBS.LCIRC.1036r1963
Download PDF | Download Citation
Letter Circular 1040: list of state, commonwealth, and District weights and measures offices of the United States
1962

LCIRC 1040
10.6028/NBS.LCIRC.1040
Download PDF | Download Citation
Letter Circular 1039: NBS standards for opacity meters (supersedes Letter Circular 418)
1961

LCIRC 1039
10.6028/NBS.LCIRC.1039
Download PDF | Download Citation
Letter Circular 1035: units and systems of weights and measures their origin, development, and present status (temporary replacement of Letter Circular 570)
1960

LCIRC 1035
10.6028/NBS.LCIRC.1035
Download PDF | Download Citation
Letter Circular 1038: the additive system of photographic exposure computation
1960

LCIRC 1038
10.6028/NBS.LCIRC.1038
Download PDF | Download Citation
Letter Circular 1033: use of the international inch for reporting lengths of gage blocks
1959

LCIRC 1033
10.6028/NBS.LCIRC.1033
Download PDF | Download Citation
Letter Circular 1029: resolving -power chart
1958

LCIRC 1029
10.6028/NBS.LCIRC.1029
Download PDF | Download Citation
Letter Circular 1030: polishes
1958

LCIRC 1030
10.6028/NBS.LCIRC.1030
Download PDF | Download Citation
Letter Circular 1031: detergents and detergent aids
1958

LCIRC 1031
10.6028/NBS.LCIRC.1031
Download PDF | Download Citation
Letter Circular 1032: sweeping compounds (also known as floor sweep and dust down)
1958

LCIRC 1032
10.6028/NBS.LCIRC.1032
Download PDF | Download Citation
Letter Circular 1026: methods of calibration and testing of hygrometers
1957

LCIRC 1026
10.6028/NBS.LCIRC.1026
Download PDF | Download Citation
Letter Circular 1027: list of weights and measures offices of the States, territories, District of Columbia, and organized island possessions of the United States
1957

LCIRC 1027r1957
10.6028/NBS.LCIRC.1027r1957
Download PDF | Download Citation
Letter Circular 1028: nomenclature of copper alloys - brass and bronze
1957

LCIRC 1028
10.6028/NBS.LCIRC.1028
Download PDF | Download Citation
Letter Circular 1022: revised ISCC-NBS color designations for the colors of the standard color cards issued by the textile color card association of the United States
1956

LCIRC 1022
10.6028/NBS.LCIRC.1022
Download PDF | Download Citation
Letter Circular 1023: standard frequencies and time signals WWV and WWVH (supersedes Letter Circular 1009)
1956

LCIRC 1023
10.6028/NBS.LCIRC.1023
Download PDF | Download Citation
Letter Circular 1024: standard light-sensitive paper for use in testing textiles for colorfastness to light (supersedes Letter Circular 1016)
1956

LCIRC 1024r1956
10.6028/NBS.LCIRC.1024r1956
Download PDF | Download Citation
Letter Circular 1025: National Bureau of Standards electron devices data service
1956

LCIRC 1025
10.6028/NBS.LCIRC.1025
Download PDF | Download Citation
Letter Circular 1006: house plan services (supersedes Letter Circular 927)
1955

LCIRC 1006
10.6028/NBS.LCIRC.1006
Download PDF | Download Citation
Letter Circular 1016: light-sensitive paper for use in testing textiles in colorfastness to light
1955

LCIRC 1016r1955
10.6028/NBS.LCIRC.1016r1955
Download PDF | Download Citation
Letter Circular 1017: standards for checking the calibration of spectrophotometers (200 to 1000 m?)+J1051:L1051
1955

LCIRC 1017
10.6028/NBS.LCIRC.1017
Download PDF | Download Citation
Letter Circular 1018: dampness in masonry walls above grade (supersedes Letter Circular 865)
1955

LCIRC 1018
10.6028/NBS.LCIRC.1018
Download PDF | Download Citation
Letter Circular 1020: motor gasoline (supersedes Letter Circular 991, 551 and 281)
1955

LCIRC 1020
10.6028/NBS.LCIRC.1020
Download PDF | Download Citation
Letter Circular 1021: list of weights and measures offices of the States, territories, District of Columbia, and organized island possessions of the United States
1955

LCIRC 1021r1955
10.6028/NBS.LCIRC.1021r1955
Download PDF | Download Citation
Letter Circular 1015: artificial abrasives and abrasive products
1954

LCIRC 1015
10.6028/NBS.LCIRC.1015
Download PDF | Download Citation
Letter Circular 1010: physical properties of currently produced marbles
1953
Arthur Hockman
LCIRC 1010
10.6028/NBS.LCIRC.1010
Download PDF | Download Citation
Letter Circular 1012: light-sensitive paper, directions for use in testing textiles for colorfastness to light
1953

LCIRC 1012
10.6028/NBS.LCIRC.1012
Download PDF | Download Citation
Letter Circular 1013: methods for electroplating metals on nonconducting materials
1953

LCIRC 1013r1953
10.6028/NBS.LCIRC.1013r1953
Download PDF | Download Citation
Letter Circular 1002: general tables of weights and measures (supersedes Letter Circular 682)
1952

LCIRC 1002
10.6028/NBS.LCIRC.1002
Download PDF | Download Citation
Letter Circular 1008: textile testing equipment (superseding Letter Circular 907)
1952
Josephine M Blandford
LCIRC 1008
10.6028/NBS.LCIRC.1008
Download PDF | Download Citation
Letter Circular 957: units and systems of weights and measures (superseding Letter Circular 681)
1952

LCIRC 957r1952
10.6028/NBS.LCIRC.957r1952
Download PDF | Download Citation
Letter Circular 1000: publications relating to building construction and maintenance (supersedes Letter Circular 985)
1951

LCIRC 1000
10.6028/NBS.LCIRC.1000
Download PDF | Download Citation
Letter Circular 1001: liquefied petroleum gas as an engine fuel
1951
Frank L Howard
LCIRC 1001
10.6028/NBS.LCIRC.1001
Download PDF | Download Citation
Letter Circular 1003: pneumatic tires
1951

LCIRC 1003
10.6028/NBS.LCIRC.1003
Download PDF | Download Citation
Letter Circular 1004: light-sensitive paper no. 1554, directions for use in testing textiles for colorfastness to light (superseding Letter Circular 934)
1951

LCIRC 1004
10.6028/NBS.LCIRC.1004
Download PDF | Download Citation
Letter Circular 1007: artificial abrasives and abrasive products (replaces Letter Circular 917)
1951

LCIRC 1007
10.6028/NBS.LCIRC.1007
Download PDF | Download Citation
Letter Circular 996: publications on leather (supersedes Letter Circular 918)
1951
Bernice B Schwab
LCIRC 996
10.6028/NBS.LCIRC.996
Download PDF | Download Citation
Letter Circular 997: accuracy and precision of calibrated values for standard weights of the laboratory classes
1951

LCIRC 997
10.6028/NBS.LCIRC.997
Download PDF | Download Citation
Letter Circular 998: electric batteries and standard cells publications by the staff of the National Bureau of Standards and references to other sources of information (supersedes Letter Circular 904)
1951

LCIRC 998
10.6028/NBS.LCIRC.998
Download PDF | Download Citation
Letter Circular 999: building materials and structures reports (supersedes Letter Circular 960)
1951

LCIRC 999
10.6028/NBS.LCIRC.999
Download PDF | Download Citation
Letter Circular 971: performance of wrist watches
1950

LCIRC 971
10.6028/NBS.LCIRC.971
Download PDF | Download Citation
Letter Circular 972: publications relating to building construction -- home building -- building material specification -- home maintenance (superseding Letter Circular 891)
1950

LCIRC 972
10.6028/NBS.LCIRC.972
Download PDF | Download Citation
Letter Circular 974: standard frequencies and time signals, WWV and WWVH
1950

LCIRC 974
10.6028/NBS.LCIRC.974
Download PDF | Download Citation
Letter Circular 975: plastics (supersedes Letter Circular 975)
1950

LCIRC 975
10.6028/NBS.LCIRC.975
Download PDF | Download Citation
Letter Circular 977: standards and specifications for building and construction materials, fixtures, supplies, and equipment (superseding Letter Circular 941)
1950

LCIRC 977
10.6028/NBS.LCIRC.977
Download PDF | Download Citation
Letter Circular 978: list of commercial standards (supersedes Letter Circular 956)
1950

LCIRC 978r1950
10.6028/NBS.LCIRC.978r1950
Download PDF | Download Citation
Letter Circular 979: simplified practice recommendations (supersedes Letter Circular 958)
1950

LCIRC 979r1950
10.6028/NBS.LCIRC.979r1950
Download PDF | Download Citation
Letter Circular 980: electrodeposition (supersedes Letter Circular 903)
1950

LCIRC 980
10.6028/NBS.LCIRC.980
Download PDF | Download Citation
Letter Circular 981: modern books on horology (supersedes Letter Circular 766)
1950

LCIRC 981
10.6028/NBS.LCIRC.981
Download PDF | Download Citation
Letter Circular 982: home heating problems (superseding Letter Circular 948)
1950

LCIRC 982
10.6028/NBS.LCIRC.982
Download PDF | Download Citation
Letter Circular 983: masonry, masonry units, and mortar (supersedes Letter Circular 909)
1950

LCIRC 983
10.6028/NBS.LCIRC.983
Download PDF | Download Citation
Letter Circular 984: underground corrosion (supersedes Letter Circular 734)
1950

LCIRC 984
10.6028/NBS.LCIRC.984
Download PDF | Download Citation
Letter Circular 985: list of published material relating to home building and maintenance (supersedes Letter Circular 951)
1950

LCIRC 985
10.6028/NBS.LCIRC.985
Download PDF | Download Citation
Letter Circular 986: color charts: a descriptive list (supersedes Letter Circular 809)
1950

LCIRC 986
10.6028/NBS.LCIRC.986
Download PDF | Download Citation
Letter Circular 987: color harmony:ban annotated bibliography (supersedes Letter Circular 525)
1950

LCIRC 987
10.6028/NBS.LCIRC.987
Download PDF | Download Citation
Letter Circular 988: detergents and related subjects (superseding Letter Circular 825)
1950

LCIRC 988
10.6028/NBS.LCIRC.988
Download PDF | Download Citation
Letter Circular 989: porcelain & pottery (supersedes Letter Circular 880)
1950

LCIRC 989
10.6028/NBS.LCIRC.989
Download PDF | Download Citation
Letter Circular 990: rerefining used crankcase oil (supersedes Letter Circular 360)
1950

LCIRC 990
10.6028/NBS.LCIRC.990
Download PDF | Download Citation
Letter Circular 991: motor gasoline (supersedes Letter Circular 551 and 281)
1950

LCIRC 991
10.6028/NBS.LCIRC.991
Download PDF | Download Citation
Letter Circular 992: list of National Bureau of Standards publications on photography (supersedes Letter Circular 531)
1950

LCIRC 992
10.6028/NBS.LCIRC.992
Download PDF | Download Citation
Letter Circular 993: standardization of pH measurements made with glass electrode (supersedes Letter Circular 933)
1950

LCIRC 993
10.6028/NBS.LCIRC.993
Download PDF | Download Citation
Letter Circular 995: weights and measures (supersedes Letter Circular 926)
1950

LCIRC 995
10.6028/NBS.LCIRC.995
Download PDF | Download Citation
Letter Circular 930: standards of length, mass, and time (supersedes Letter Circular 449)
1949

LCIRC 930
10.6028/NBS.LCIRC.930
Download PDF | Download Citation
Letter Circular 973: list of published material relating to building regulation (superseding Letter Circular 928)
1949

LCIRC 973
10.6028/NBS.LCIRC.973
Download PDF | Download Citation
Letter Circular 976: publications by the staff of the x-ray section
1949

LCIRC 976
10.6028/NBS.LCIRC.976
Download PDF | Download Citation
Letter Circular 872sup1: continuation to date of bibliography of unclassified books and reports on gas turbines, jet propulsion and rocket power plants
1948

LCIRC 872sup1
10.6028/NBS.LCIRC.872sup1
Download PDF | Download Citation
Letter Circular 872sup2: continuation to date of bibliography of unclassified books and reports on gas turbines, jet propulsion and rocket power plants
1948

LCIRC 872sup2
10.6028/NBS.LCIRC.872sup2
Download PDF | Download Citation
Letter Circular 885: list of published material relating to home building and maintenance (supersedes Letter Circular 856)
1948

LCIRC 885
10.6028/NBS.LCIRC.885
Download PDF | Download Citation
Letter Circular 886: technical radio broadcast services, radio station WWV (supersedes Letter Circular 875)
1948

LCIRC 886
10.6028/NBS.LCIRC.886
Download PDF | Download Citation
Letter Circular 887: European footware sizes
1948
Robert B Hobbs
LCIRC 887
10.6028/NBS.LCIRC.887
Download PDF | Download Citation
Letter Circular 889: home heating problems (superseding Letter Circular 855)
1948

LCIRC 889r1948
10.6028/NBS.LCIRC.889r1948
Download PDF | Download Citation
Letter Circular 890: list of commercial standards (supersedes Letter Circular 878)
1948

LCIRC 890r1948
10.6028/NBS.LCIRC.890r1948
Download PDF | Download Citation
Letter Circular 891: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 858)
1948

LCIRC 891r1948
10.6028/NBS.LCIRC.891r1948
Download PDF | Download Citation
Letter Circular 892: dry etching of glass (supersedes Letter Circular 892)
1948

LCIRC 892
10.6028/NBS.LCIRC.892
Download PDF | Download Citation
Letter Circular 893: dental materials (supersedes Letter Circular 839)
1948

LCIRC 893
10.6028/NBS.LCIRC.893
Download PDF | Download Citation
Letter Circular 894: publications relating to accident prevention and safety (supersedes Letter Circular 806)
1948

LCIRC 894
10.6028/NBS.LCIRC.894
Download PDF | Download Citation
Letter Circular 895: simplified practice recommendations (supersedes Letter Circular 883)
1948

LCIRC 895r1948
10.6028/NBS.LCIRC.895r1948
Download PDF | Download Citation
Letter Circular 896: standards and specifications for building and construction materials, fixtures, supplies, and equipment (superseding Letter Circular 860)
1948

LCIRC 896r1948
10.6028/NBS.LCIRC.896r1948
Download PDF | Download Citation
Letter Circular 897: tables for transforming chromaticity coordinates from the I.C.I system to the R-U-C-S system
1948

LCIRC 897
10.6028/NBS.LCIRC.897
Download PDF | Download Citation
Letter Circular 898: gypsum (supersedes Letter Circular 569)
1948

LCIRC 898
10.6028/NBS.LCIRC.898
Download PDF | Download Citation
Letter Circular 899: European footware sizes (supersedes Letter Circular 887)
1948
Robert B Hobbs
LCIRC 899
10.6028/NBS.LCIRC.899
Download PDF | Download Citation
Letter Circular 900: paint, varnish, lacquer and related products (superseding Letter Circular 859)
1948

LCIRC 900
10.6028/NBS.LCIRC.900
Download PDF | Download Citation
Letter Circular 901: the fundamental basis for the standardization of electrical instruments and meters
1948
FB Silsbee
LCIRC 901
10.6028/NBS.LCIRC.901
Download PDF | Download Citation
Letter Circular 902: building materials and structures reports (supersedes Letter Circular 800)
1948

LCIRC 902
10.6028/NBS.LCIRC.902
Download PDF | Download Citation
Letter Circular 903: electrodeposition (supersedes Letter Circular 881)
1948

LCIRC 903
10.6028/NBS.LCIRC.903
Download PDF | Download Citation
Letter Circular 904: electric batteries and standard cells, publications by the staff of the National Bureau of Standards and references to other sources of information (supersedes Letter Circular 846)
1948

LCIRC 904
10.6028/NBS.LCIRC.904
Download PDF | Download Citation
Letter Circular 905: standards to promote export trade (supersedes Letter Circular 799)
1948

LCIRC 905
10.6028/NBS.LCIRC.905
Download PDF | Download Citation
Letter Circular 906: standard fading lamp and method of calibrating lamps used in testing colorfastness to light
1948

LCIRC 906
10.6028/NBS.LCIRC.906
Download PDF | Download Citation
Letter Circular 907: textile testing equipment
1948
Josephine M Blandford
LCIRC 907
10.6028/NBS.LCIRC.907
Download PDF | Download Citation
Letter Circular 908: list of published materials relating to home building and maintenance (supersedes Letter Circular 885)
1948

LCIRC 908
10.6028/NBS.LCIRC.908
Download PDF | Download Citation
Letter Circular 909: structural clay products, stone, and masonry (supersedes Letter Circular 824)
1948

LCIRC 909
10.6028/NBS.LCIRC.909
Download PDF | Download Citation
Letter Circular 910: engineering mechanics (superseding Letter Circular 683)
1948

LCIRC 910
10.6028/NBS.LCIRC.910
Download PDF | Download Citation
Letter Circular 911: list of commercial standards (supersedes Letter Circular 890)
1948

LCIRC 911r1948
10.6028/NBS.LCIRC.911r1948
Download PDF | Download Citation
Letter Circular 912: textiles:sources of information
1948
Josephine M Blandford
LCIRC 912
10.6028/NBS.LCIRC.912
Download PDF | Download Citation
Letter Circular 913: simplified practice recommendations (superseding Letter Circular 895)
1948

LCIRC 913r1948
10.6028/NBS.LCIRC.913r1948
Download PDF | Download Citation
Letter Circular 914: concrete masonry units
1948

LCIRC 914
10.6028/NBS.LCIRC.914
Download PDF | Download Citation
Letter Circular 915: painting exterior walls of porous masonry (superseding Letter Circular 747)
1948
Clara Sentel
LCIRC 915
10.6028/NBS.LCIRC.915
Download PDF | Download Citation
Letter Circular 916: sources of radio information (supersedes Letter Circular 850)
1948

LCIRC 916
10.6028/NBS.LCIRC.916
Download PDF | Download Citation
Letter Circular 917: artificial abrasives and abrasive products (replaces Letter Circular 812)
1948

LCIRC 917
10.6028/NBS.LCIRC.917
Download PDF | Download Citation
Letter Circular 918: leather (supersedes Letter Circular 788)
1948
CW Mann
LCIRC 918
10.6028/NBS.LCIRC.918
Download PDF | Download Citation
Letter Circular 919: list of weights and measures offices of the States and the District of Columbia (supersedes Letter Circular 834)
1948

LCIRC 919
10.6028/NBS.LCIRC.919
Download PDF | Download Citation
Letter Circular 920: equipment for the testing of large-capacity scales
1948

LCIRC 920
10.6028/NBS.LCIRC.920
Download PDF | Download Citation
Letter Circular 921: leather gloves: general information
1948
Elizabeth R Hosterman, Robert B Hobbs
LCIRC 921
10.6028/NBS.LCIRC.921
Download PDF | Download Citation
Letter Circular 922: bibliography of some recent research in the field of high polymers (supersedes Letter Circular 871 and 871sup
1948
Robert Simha, Mary Budge
LCIRC 922
10.6028/NBS.LCIRC.922
Download PDF | Download Citation
Letter Circular 923: acoustics (supersedes Letter Circular 778)
1948

LCIRC 923
10.6028/NBS.LCIRC.923
Download PDF | Download Citation
Letter Circular 924: test of resistance apparatus (superseding Letter Circular 460)
1948

LCIRC 924
10.6028/NBS.LCIRC.924
Download PDF | Download Citation
Letter Circular 925: testing of electrical instruments, meters and range-extending auxiliaries (superseding Letter Circular 475)
1948

LCIRC 925
10.6028/NBS.LCIRC.925
Download PDF | Download Citation
Letter Circular 926: weights and measures a selected list of publications of the National Bureau of Standards (supersedes Letter Circular 845)
1948

LCIRC 926
10.6028/NBS.LCIRC.926
Download PDF | Download Citation
Letter Circular 927: house plan services (supersedes Letter Circular 866)
1948

LCIRC 927
10.6028/NBS.LCIRC.927
Download PDF | Download Citation
Letter Circular 928: list of published material relating to building regulation (superseding Letter Circular 847)
1948

LCIRC 928
10.6028/NBS.LCIRC.928
Download PDF | Download Citation
Letter Circular 929: standards for checking the calibration of spectrophotometers (200 to 1000 m?)
1948

LCIRC 929
10.6028/NBS.LCIRC.929
Download PDF | Download Citation
Letter Circular 839: dental materials (supersedes Letter Circular 558)
1947

LCIRC 839
10.6028/NBS.LCIRC.839
Download PDF | Download Citation
Letter Circular 842: list of commercial standards (supersedes Letter Circular 836)
1947

LCIRC 842r1947
10.6028/NBS.LCIRC.842r1947
Download PDF | Download Citation
Letter Circular 843: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 811)
1947

LCIRC 843r1947
10.6028/NBS.LCIRC.843r1947
Download PDF | Download Citation
Letter Circular 844: simplified practice recommendations (supersedes Letter Circular 826)
1947

LCIRC 844r1947
10.6028/NBS.LCIRC.844r1947
Download PDF | Download Citation
Letter Circular 845: weights and measures, a selected list of publications of the National Bureau of Standards (supersedes Letter Circular 772)
1947

LCIRC 845
10.6028/NBS.LCIRC.845
Download PDF | Download Citation
Letter Circular 846: electric batteries and standard cells (supersedes Letter Circular 720)
1947

LCIRC 846
10.6028/NBS.LCIRC.846
Download PDF | Download Citation
Letter Circular 847: list of published material relating to building regulation (supersedes Letter Circular 804)
1947

LCIRC 847
10.6028/NBS.LCIRC.847
Download PDF | Download Citation
Letter Circular 849: list of publications of interest to the general public (superseding Letter Circular 696)
1947

LCIRC 849r1947
10.6028/NBS.LCIRC.849r1947
Download PDF | Download Citation
Letter Circular 850: sources of radio information (supersedes Letter Circular 735)
1947

LCIRC 850
10.6028/NBS.LCIRC.850
Download PDF | Download Citation
Letter Circular 851: cement (supersedes Letter Circular 641)
1947

LCIRC 851
10.6028/NBS.LCIRC.851
Download PDF | Download Citation
Letter Circular 852: refractories (supersedes Letter Circular 587C)
1947

LCIRC 852
10.6028/NBS.LCIRC.852
Download PDF | Download Citation
Letter Circular 853: list of commercial standards (supersedes Letter Circular 842)
1947

LCIRC 853r1947
10.6028/NBS.LCIRC.853r1947
Download PDF | Download Citation
Letter Circular 854: x-rays (supersedes Letter Circular 602)
1947

LCIRC 854
10.6028/NBS.LCIRC.854
Download PDF | Download Citation
Letter Circular 855: home heating problems (superseding Letter Circular 840)
1947

LCIRC 855r1947
10.6028/NBS.LCIRC.855r1947
Download PDF | Download Citation
Letter Circular 856: list of published material relating to home building and maintenance (supersedes Letter Circular 830)
1947

LCIRC 856
10.6028/NBS.LCIRC.856
Download PDF | Download Citation
Letter Circular 857: terminology and symbols for use in ultraviolet, visible, and infrared absorptiometry
1947

LCIRC 857
10.6028/NBS.LCIRC.857
Download PDF | Download Citation
Letter Circular 858: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 843)
1947

LCIRC 858r1947
10.6028/NBS.LCIRC.858r1947
Download PDF | Download Citation
Letter Circular 859: paint, varnish, lacquer and related products (superseding Letter Circular 795)
1947

LCIRC 859
10.6028/NBS.LCIRC.859
Download PDF | Download Citation
Letter Circular 860: standards and specifications for building and construction materials, fixtures, supplies, and equipment (superseding Letter Circular 808)
1947

LCIRC 860r1947
10.6028/NBS.LCIRC.860r1947
Download PDF | Download Citation
Letter Circular 861: inside wall paint for chemical laboratories (fume-resisting enamel paint) (superseding Letter Circular 489)
1947

LCIRC 861
10.6028/NBS.LCIRC.861
Download PDF | Download Citation
Letter Circular 862: fire resistance and fire prevention (supersedes Letter Circular 661)
1947

LCIRC 862
10.6028/NBS.LCIRC.862
Download PDF | Download Citation
Letter Circular 863: condensation in buildings
1947
Richard S Dill
LCIRC 863
10.6028/NBS.LCIRC.863
Download PDF | Download Citation
Letter Circular 864: effect of changes in electrical and photometric units on previously assigned values for standard lamps
1947

LCIRC 864
10.6028/NBS.LCIRC.864
Download PDF | Download Citation
Letter Circular 865: dampness in masonry walls above grade (supersedes Letter Circular 721)
1947

LCIRC 865
10.6028/NBS.LCIRC.865
Download PDF | Download Citation
Letter Circular 866: house plan services (supersedes Letter Circular 829)
1947

LCIRC 866
10.6028/NBS.LCIRC.866
Download PDF | Download Citation
Letter Circular 867: wood and shingle stains (superseding Letter Circular 464)
1947

LCIRC 867
10.6028/NBS.LCIRC.867
Download PDF | Download Citation
Letter Circular 868: detergents and detergent aids (superseding Letter Circular 338)
1947

LCIRC 868
10.6028/NBS.LCIRC.868
Download PDF | Download Citation
Letter Circular 869: rubber: list of NBS publications (supersedes Letter Circular 707)
1947
Lawrence A Wood
LCIRC 869
10.6028/NBS.LCIRC.869
Download PDF | Download Citation
Letter Circular 870: sound absorption coefficients of the more common acoustic materials (supersedes Letter Circular 714 and 715)
1947

LCIRC 870
10.6028/NBS.LCIRC.870
Download PDF | Download Citation
Letter Circular 871sup: bibliography of some recent research in the field of high polymers (supplement to Letter Circular 871)
1947

LCIRC 871
10.6028/NBS.LCIRC.871
Download PDF | Download Citation
Letter Circular 872: gas turbines and jet propulsion (supersedes Letter Circular 832)
1947

LCIRC 872
10.6028/NBS.LCIRC.872
Download PDF | Download Citation
Letter Circular 873: enamels (supersedes Letter Circular 587D)
1947

LCIRC 873
10.6028/NBS.LCIRC.873
Download PDF | Download Citation
Letter Circular 874: radio (supersedes Letter Circular 781)
1947

LCIRC 874
10.6028/NBS.LCIRC.874
Download PDF | Download Citation
Letter Circular 875: technical radio broadcast service, radio station WWV
1947

LCIRC 875
10.6028/NBS.LCIRC.875
Download PDF | Download Citation
Letter Circular 876: effect of support on the performance of vane anemometers
1947

LCIRC 876
10.6028/NBS.LCIRC.876
Download PDF | Download Citation
Letter Circular 877: electrical characteristics of dry cells and batteries (Leclanch´┐Ż type) (supersedes Letter Circular 677)
1947

LCIRC 877
10.6028/NBS.LCIRC.877
Download PDF | Download Citation
Letter Circular 878: list of commercial standards (supersedes Letter Circular 853)
1947

LCIRC 878r1947
10.6028/NBS.LCIRC.878r1947
Download PDF | Download Citation
Letter Circular 879: selection, installation, and care of linoleum
1947
GG Richey
LCIRC 879
10.6028/NBS.LCIRC.879
Download PDF | Download Citation
Letter Circular 880: porcelain & pottery (supersedes Letter Circular 762)
1947

LCIRC 880
10.6028/NBS.LCIRC.880
Download PDF | Download Citation
Letter Circular 881: electrodeposition (supersedes Letter Circular 775)
1947

LCIRC 881
10.6028/NBS.LCIRC.881
Download PDF | Download Citation
Letter Circular 882: revised classification of radio subjects used in National Bureau of Standards (supersedes Letter Circular 814)
1947

LCIRC 882
10.6028/NBS.LCIRC.882
Download PDF | Download Citation
Letter Circular 883: simplified practice recommendations (supersedes Letter Circular 844)
1947

LCIRC 883r1947
10.6028/NBS.LCIRC.883r1947
Download PDF | Download Citation
Letter Circular 884: mathematical tables (revision of Letter Circular 777)
1947

LCIRC 884
10.6028/NBS.LCIRC.884
Download PDF | Download Citation
Letter Circular 813: dampness in basements and ground floors
1946
Richard S Dill, Douglas E Parsons
LCIRC 813
10.6028/NBS.LCIRC.813
Download PDF | Download Citation
Letter Circular 814: revised classification of radio subjects used in National Bureau of Standards (supersedes Circular 385)
1946

LCIRC 814
10.6028/NBS.LCIRC.814
Download PDF | Download Citation
Letter Circular 815: list of commercial standards (supersedes Letter Circular 803)
1946

LCIRC 815r1946
10.6028/NBS.LCIRC.815r1946
Download PDF | Download Citation
Letter Circular 816: simplified practice recommendations (supersedes Letter Circular 794)
1946

LCIRC 816r1946
10.6028/NBS.LCIRC.816r1946
Download PDF | Download Citation
Letter Circular 817: fluorescent lamps (superseding Letter Circular 652)
1946

LCIRC 817
10.6028/NBS.LCIRC.817
Download PDF | Download Citation
Letter Circular 818: flameproofing of textiles (supersedes Letter Circular 467)
1946

LCIRC 818
10.6028/NBS.LCIRC.818
Download PDF | Download Citation
Letter Circular 819: National Bureau of Standards specification for knoop indenters
1946

LCIRC 819
10.6028/NBS.LCIRC.819
Download PDF | Download Citation
Letter Circular 820: plastic paint (supersedes Letter Circular 798)
1946

LCIRC 820
10.6028/NBS.LCIRC.820
Download PDF | Download Citation
Letter Circular 821: cathodic protection of underground structures
1946

LCIRC 821
10.6028/NBS.LCIRC.821
Download PDF | Download Citation
Letter Circular 822: National Bureau of Standards specification for proving rings for calibrating testing machines (superseding Letter Circular 657)
1946

LCIRC 822
10.6028/NBS.LCIRC.822
Download PDF | Download Citation
Letter Circular 823: list of commercial standards (supersedes Letter Circular 815)
1946

LCIRC 823r1946
10.6028/NBS.LCIRC.823r1946
Download PDF | Download Citation
Letter Circular 824: structural clay products, stone, and masonry (supersedes Letter Circular 643)
1946

LCIRC 824
10.6028/NBS.LCIRC.824
Download PDF | Download Citation
Letter Circular 825: detergents and related subjects (superseding Letter Circular 608)
1946

LCIRC 825
10.6028/NBS.LCIRC.825
Download PDF | Download Citation
Letter Circular 826: simplified practice recommendations (supersedes Letter Circular 816)
1946

LCIRC 826r1946
10.6028/NBS.LCIRC.826r1946
Download PDF | Download Citation
Letter Circular 827: sunlamps, therapeutic lamps; ultraviolet and infrared lamps (supersedes Letter Circular 631)
1946

LCIRC 827
10.6028/NBS.LCIRC.827
Download PDF | Download Citation
Letter Circular 828: flameproofing of textiles (supersedes Letter Circular 818)
1946

LCIRC 828
10.6028/NBS.LCIRC.828
Download PDF | Download Citation
Letter Circular 829: house plan services (supersedes Letter Circular 801)
1946

LCIRC 829
10.6028/NBS.LCIRC.829
Download PDF | Download Citation
Letter Circular 830: list of published material relating to home building and maintenance (supersedes Letter Circular 805)
1946

LCIRC 830
10.6028/NBS.LCIRC.830
Download PDF | Download Citation
Letter Circular 831: the painting of exterior metal surfaces (superseding Letter Circular 422)
1946
EF Hickson, WC Porter
LCIRC 831
10.6028/NBS.LCIRC.831
Download PDF | Download Citation
Letter Circular 832: bibliography of unclassified books and reports on gas turbines, jet propulsion and rocket power plants
1946

LCIRC 832
10.6028/NBS.LCIRC.832
Download PDF | Download Citation
Letter Circular 834: list of weights and measures offices of the States and District of Columbia (supersedes Letter Circular 650)
1946

LCIRC 834
10.6028/NBS.LCIRC.834
Download PDF | Download Citation
Letter Circular 835: lime (supersedes Letter Circular 144)
1946

LCIRC 835r1946
10.6028/NBS.LCIRC.835r1946
Download PDF | Download Citation
Letter Circular 836: list of commercial standards (supersedes Letter Circular 833)
1946

LCIRC 836r1946
10.6028/NBS.LCIRC.836r1946
Download PDF | Download Citation
Letter Circular 837: painting interior walls and trim (superseding Letter Circular 304)
1946
EF Hickson, PT Howard
LCIRC 837
10.6028/NBS.LCIRC.837
Download PDF | Download Citation
Letter Circular 838: concrete and reinforced concrete (supersedes Letter Circular 642)
1946

LCIRC 838
10.6028/NBS.LCIRC.838
Download PDF | Download Citation
Letter Circular 840: home heating problems: list of publications and articles (superseding Letter Circular 807)
1946

LCIRC 840r1946
10.6028/NBS.LCIRC.840r1946
Download PDF | Download Citation
Letter Circular 841: glass and glass products (supersedes Letter Circular 350)
1946

LCIRC 841r1946
10.6028/NBS.LCIRC.841r1946
Download PDF | Download Citation
Letter Circular 848: metallurgy: publications by members of the staff of the National Bureau of Standards (1936-1946) (supersedes Letter Circular 740)
1946

LCIRC 848
10.6028/NBS.LCIRC.848
Download PDF | Download Citation
Letter Circular 774: thermal insulation of dwelling houses (supersedes Letter Circular 759)
1945

LCIRC 774
10.6028/NBS.LCIRC.774
Download PDF | Download Citation
Letter Circular 775: electrodeposition (supersedes Letter Circular 669)
1945

LCIRC 775
10.6028/NBS.LCIRC.775
Download PDF | Download Citation
Letter Circular 776: list of commercial standards (supersedes Letter Circular 768)
1945

LCIRC 776r1945
10.6028/NBS.LCIRC.776r1945
Download PDF | Download Citation
Letter Circular 777: mathematical tables
1945

LCIRC 777
10.6028/NBS.LCIRC.777
Download PDF | Download Citation
Letter Circular 778: acoustics (supersedes Letter Circular 636)
1945

LCIRC 778
10.6028/NBS.LCIRC.778
Download PDF | Download Citation
Letter Circular 780: methods of using standard frequencies broadcast by radio (supersedes Letter Circular 751)
1945

LCIRC 780
10.6028/NBS.LCIRC.780
Download PDF | Download Citation
Letter Circular 781: radio (supersedes Letter Circular 692)
1945

LCIRC 781
10.6028/NBS.LCIRC.781
Download PDF | Download Citation
Letter Circular 782: plastics (replaces Letter Circular 712)
1945

LCIRC 782
10.6028/NBS.LCIRC.782
Download PDF | Download Citation
Letter Circular 783: books on diesel engines
1945

LCIRC 783
10.6028/NBS.LCIRC.783
Download PDF | Download Citation
Letter Circular 784: electrical interference with radio reception (supersedes Letter Circular 660)
1945

LCIRC 784
10.6028/NBS.LCIRC.784
Download PDF | Download Citation
Letter Circular 785: calibration of arc lamps for testing colorfastness to light
1945

LCIRC 785
10.6028/NBS.LCIRC.785
Download PDF | Download Citation
Letter Circular 786: list of commercial standards (supersedes Letter Circular 776)
1945

LCIRC 786r1945
10.6028/NBS.LCIRC.786r1945
Download PDF | Download Citation
Letter Circular 787: house plan services (supersedes Letter Circular 428)
1945

LCIRC 787
10.6028/NBS.LCIRC.787
Download PDF | Download Citation
Letter Circular 788: leather (supersedes letter Circular 667)
1945

LCIRC 788
10.6028/NBS.LCIRC.788
Download PDF | Download Citation
Letter Circular 789: colorimetry, spectrophotometry, and photometry
1945

LCIRC 789
10.6028/NBS.LCIRC.789
Download PDF | Download Citation
Letter Circular 790: gases (supersedes Letter Circular 546)
1945

LCIRC 790
10.6028/NBS.LCIRC.790
Download PDF | Download Citation
Letter Circular 791: the mass spectrometer
1945

LCIRC 791
10.6028/NBS.LCIRC.791
Download PDF | Download Citation
Letter Circular 792: optical instruments, refractometry and optical properties of glass (supersedes Letter Circular 704)
1945

LCIRC 792
10.6028/NBS.LCIRC.792
Download PDF | Download Citation
Letter Circular 793: list of commercial standards (supersedes Letter Circular 786)
1945

LCIRC 793r1945
10.6028/NBS.LCIRC.793r1945
Download PDF | Download Citation
Letter Circular 794: simplified practice recommendations (supersedes Letter Circular 750)
1945

LCIRC 794r1945
10.6028/NBS.LCIRC.794r1945
Download PDF | Download Citation
Letter Circular 795: paint, varnish and bituminous materials (superseding Letter Circular 659)
1945

LCIRC 795
10.6028/NBS.LCIRC.795
Download PDF | Download Citation
Letter Circular 796: publications relating to the building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 653)
1945

LCIRC 796r1945
10.6028/NBS.LCIRC.796r1945
Download PDF | Download Citation
Letter Circular 797: automobile painting
1945

LCIRC 797
10.6028/NBS.LCIRC.797
Download PDF | Download Citation
Letter Circular 798: plastic paint
1945

LCIRC 798
10.6028/NBS.LCIRC.798
Download PDF | Download Citation
Letter Circular 799: export trade expansion and retention through certification of quality (supersedes Letter Circular 618)
1945

LCIRC 799
10.6028/NBS.LCIRC.799
Download PDF | Download Citation
Letter Circular 800: building materials and structures reports (supersedes Letter Circular 552)
1945

LCIRC 800
10.6028/NBS.LCIRC.800
Download PDF | Download Citation
Letter Circular 801: house plan services (supersedes Letter Circular 787)
1945

LCIRC 801
10.6028/NBS.LCIRC.801
Download PDF | Download Citation
Letter Circular 802: plastics (replaces Letter Circular 782)
1945

LCIRC 802
10.6028/NBS.LCIRC.802
Download PDF | Download Citation
Letter Circular 803: list of commercial standards (supersedes Letter Circular 793)
1945

LCIRC 803r1945
10.6028/NBS.LCIRC.803r1945
Download PDF | Download Citation
Letter Circular 804: list of published material relating to building regulation (supersedes Letter Circular 716)
1945

LCIRC 804
10.6028/NBS.LCIRC.804
Download PDF | Download Citation
Letter Circular 805: list of published material relating to home building and maintenance (supersedes Letter Circular 771)
1945

LCIRC 805
10.6028/NBS.LCIRC.805
Download PDF | Download Citation
Letter Circular 806: publications relating to accident prevention and safety (supersedes Letter Circular 60)
1945

LCIRC 806
10.6028/NBS.LCIRC.806
Download PDF | Download Citation
Letter Circular 807: home heating problems (superseding Letter Circular 702)
1945

LCIRC 807r1945
10.6028/NBS.LCIRC.807r1945
Download PDF | Download Citation
Letter Circular 808: standards and specifications for building and construction materials, fixtures, supplies, and equipment (superseding Letter Circular 619)
1945

LCIRC 808r1945
10.6028/NBS.LCIRC.808r1945
Download PDF | Download Citation
Letter Circular 809: color charts: a descriptive list (superseding Letter Circular 665)
1945

LCIRC 809
10.6028/NBS.LCIRC.809
Download PDF | Download Citation
Letter Circular 810: the painting of exterior wood surfaces (superseding Letter Circular 603)
1945

LCIRC 810
10.6028/NBS.LCIRC.810
Download PDF | Download Citation
Letter Circular 811: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 796)
1945

LCIRC 811r1945
10.6028/NBS.LCIRC.811r1945
Download PDF | Download Citation
Letter Circular 811: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 796)
1945

LCIRC 811r195
10.6028/NBS.LCIRC.811r195
Download PDF | Download Citation
Letter Circular 812: artificial abrasives and abrasive products (replaces Letter Circular 540)
1945

LCIRC 812
10.6028/NBS.LCIRC.812
Download PDF | Download Citation
Letter Circular 741: polarimetry and its application to the sugars and their derivatives (revision of Letter Circular 507)
1944

LCIRC 741
10.6028/NBS.LCIRC.741
Download PDF | Download Citation
Letter Circular 742: list of commercial standards (supersedes Letter Circular 732)
1944

LCIRC 742r1944
10.6028/NBS.LCIRC.742r1944
Download PDF | Download Citation
Letter Circular 743: temperature measurements (supersedes Letter Circular 688)
1944

LCIRC 743
10.6028/NBS.LCIRC.743
Download PDF | Download Citation
Letter Circular 744: painting steel potable water tanks (superseding Letter Circular 337)
1944

LCIRC 744
10.6028/NBS.LCIRC.744
Download PDF | Download Citation
Letter Circular 745: list of commercial standards (supersedes Letter Circular 742)
1944

LCIRC 745r1944
10.6028/NBS.LCIRC.745r1944
Download PDF | Download Citation
Letter Circular 746: paints for swimming pools
1944

LCIRC 746
10.6028/NBS.LCIRC.746
Download PDF | Download Citation
Letter Circular 747: painting exterior walls of porous masonry
1944

LCIRC 747
10.6028/NBS.LCIRC.747
Download PDF | Download Citation
Letter Circular 748: refinishing wood furniture
1944

LCIRC 748
10.6028/NBS.LCIRC.748
Download PDF | Download Citation
Letter Circular 749: paint and varnish removers (also known as stripping compounds, enamel strippers, brush cleaners, etc.)
1944

LCIRC 749
10.6028/NBS.LCIRC.749
Download PDF | Download Citation
Letter Circular 750: simplified practice recommendations (supersedes Letter Circular 733)
1944

LCIRC 750r1944
10.6028/NBS.LCIRC.750r1944
Download PDF | Download Citation
Letter Circular 751: methods of using standard frequencies broadcast by radio
1944

LCIRC 751
10.6028/NBS.LCIRC.751
Download PDF | Download Citation
Letter Circular 752: control of humidity by saturated salt solutions
1944

LCIRC 752
10.6028/NBS.LCIRC.752
Download PDF | Download Citation
Letter Circular 753: polishes (supersedes Letter Circular 275)
1944

LCIRC 753
10.6028/NBS.LCIRC.753
Download PDF | Download Citation
Letter Circular 754: sweeping compounds (also known as floor sweep and dust down) (supersedes Letter Circular 340)
1944

LCIRC 754
10.6028/NBS.LCIRC.754
Download PDF | Download Citation
Letter Circular 755: list of commercial standards (supersedes Letter Circular 745)
1944

LCIRC 755r1944
10.6028/NBS.LCIRC.755r1944
Download PDF | Download Citation
Letter Circular 756: drainpipe cleaners or solvents (supersedes Letter Circular 341)
1944

LCIRC 756
10.6028/NBS.LCIRC.756
Download PDF | Download Citation
Letter Circular 757: volume correction factors for C4 hydrocarbon mixtures
1944

LCIRC 757
10.6028/NBS.LCIRC.757
Download PDF | Download Citation
Letter Circular 758: finishes for concrete floors
1944

LCIRC 758
10.6028/NBS.LCIRC.758
Download PDF | Download Citation
Letter Circular 759: thermal insulation of dwelling houses (supersedes Letter Circular 471)
1944

LCIRC 759
10.6028/NBS.LCIRC.759
Download PDF | Download Citation
Letter Circular 760: information on ultraviolet transparency of window materials and fabrics (supersedes Letter Circular 235, 429, 511, and 549, and Form Letter 113)
1944

LCIRC 760
10.6028/NBS.LCIRC.760
Download PDF | Download Citation
Letter Circular 761: solders and soldering (supersedes Letter Circular 701, 493 and343)
1944

LCIRC 761
10.6028/NBS.LCIRC.761
Download PDF | Download Citation
Letter Circular 762: whiteware (supersedes Letter Circular 587A)
1944

LCIRC 762
10.6028/NBS.LCIRC.762
Download PDF | Download Citation
Letter Circular 763: solid carbon dioxide (dry ice)
1944

LCIRC 763r1944
10.6028/NBS.LCIRC.763r1944
Download PDF | Download Citation
Letter Circular 764: the care of floors (supersedes Letter Circular 388 and 627)
1944

LCIRC 764
10.6028/NBS.LCIRC.764
Download PDF | Download Citation
Letter Circular 765: floor oils (supersedes Letter Circular 339)
1944

LCIRC 765
10.6028/NBS.LCIRC.765
Download PDF | Download Citation
Letter Circular 766: modern books on horology (supersedes Letter Circular 668)
1944

LCIRC 766
10.6028/NBS.LCIRC.766
Download PDF | Download Citation
Letter Circular 767: inorganic analytical chemistry (supersedes Letter Circular 675)
1944

LCIRC 767
10.6028/NBS.LCIRC.767
Download PDF | Download Citation
Letter Circular 768: list of commercial standards (supersedes Letter Circular 755)
1944

LCIRC 768r1944
10.6028/NBS.LCIRC.768r1944
Download PDF | Download Citation
Letter Circular 769: spectral-transmissive properties and use of colored eye-protective glasses (supplementary to Letter Circular 421)
1944

LCIRC 769
10.6028/NBS.LCIRC.769
Download PDF | Download Citation
Letter Circular 770: expanded table of weights per United States gallon and weights per cubic foot of sugar 9sucrose) solutions at 20 [degrees] C
1944
Carl F Snyder, Lester D Hammond
LCIRC 770
10.6028/NBS.LCIRC.770
Download PDF | Download Citation
Letter Circular 771: list of published material relating to home building and maintenance (supersedes Letter Circular 737)
1944

LCIRC 771
10.6028/NBS.LCIRC.771
Download PDF | Download Citation
Letter Circular 772: weights and measures, a selected list of publications of the National Bureau of Standards (supersedes Letter Circular 666)
1944

LCIRC 772
10.6028/NBS.LCIRC.772
Download PDF | Download Citation
Letter Circular 773: spray painting (supersedes Letter Circular 334)
1944

LCIRC 773
10.6028/NBS.LCIRC.773
Download PDF | Download Citation
Letter Circular 714: sound absorption coefficients of the more common acoustic materials (supersedes Letter Circular 632)
1943

LCIRC 714
10.6028/NBS.LCIRC.714
Download PDF | Download Citation
Letter Circular 715: classification of acoustic materials (supersedes Letter Circular 633)
1943

LCIRC 715
10.6028/NBS.LCIRC.715
Download PDF | Download Citation
Letter Circular 726: some notes on standardization with particular reference to retail package sizes
1943

LCIRC 726
10.6028/NBS.LCIRC.726
Download PDF | Download Citation
Letter Circular 736: liquid densities of eleven hydrocarbons found in commercial C4 mixtures
1943
CS Cragoe
LCIRC 736
10.6028/NBS.LCIRC.736
Download PDF | Download Citation
Letter Circular 675: inorganic analytical chemistry (supersedes Letter Circular 576)
1942

LCIRC 675
10.6028/NBS.LCIRC.675
Download PDF | Download Citation
Letter Circular 676: list of commercial standards
1942

LCIRC 676r1942
10.6028/NBS.LCIRC.676r1942
Download PDF | Download Citation
Letter Circular 677: electrical characteristics of dry cells and batteries
1942

LCIRC 677
10.6028/NBS.LCIRC.677
Download PDF | Download Citation
Letter Circular 678: luminous and fluorescent paints (replacing Letter Circular 336)
1942

LCIRC 678
10.6028/NBS.LCIRC.678
Download PDF | Download Citation
Letter Circular 679: thermal expansion of solids
1942

LCIRC 679r1942
10.6028/NBS.LCIRC.679r1942
Download PDF | Download Citation
Letter Circular 680: incandescent electrical lamps: photometric standards distributed by the National Bureau of Standards (superseding Letter Circular 220)
1942

LCIRC 680
10.6028/NBS.LCIRC.680
Download PDF | Download Citation
Letter Circular 681: units and systems of weights and measures
1942

LCIRC 681
10.6028/NBS.LCIRC.681
Download PDF | Download Citation
Letter Circular 682: general tables of weights and measures
1942

LCIRC 682
10.6028/NBS.LCIRC.682
Download PDF | Download Citation
Letter Circular 683: engineering mechanics (superseding Letter Circular 595)
1942

LCIRC 683
10.6028/NBS.LCIRC.683
Download PDF | Download Citation
Letter Circular 684: dead storage of automobiles
1942

LCIRC 684
10.6028/NBS.LCIRC.684
Download PDF | Download Citation
Letter Circular 685: devices for air raid warnings
1942

LCIRC 685
10.6028/NBS.LCIRC.685
Download PDF | Download Citation
Letter Circular 686: photoelectric cells; selenium cells; thermopiles (supersedes Letter Circular 515)
1942

LCIRC 686r1942
10.6028/NBS.LCIRC.686r1942
Download PDF | Download Citation
Letter Circular 687: alphabetical list of simplified practice recommendations (supersedes Letter Circular 670)
1942

LCIRC 687r1942
10.6028/NBS.LCIRC.687r1942
Download PDF | Download Citation
Letter Circular 688: temperature measurements (supersedes Letter Circular 469)
1942

LCIRC 688
10.6028/NBS.LCIRC.688
Download PDF | Download Citation
Letter Circular 689: corrosion in soils
1942

LCIRC 689
10.6028/NBS.LCIRC.689
Download PDF | Download Citation
Letter Circular 690: paper and related subjects (supersedes Letter Circular 543)
1942

LCIRC 690
10.6028/NBS.LCIRC.690
Download PDF | Download Citation
Letter Circular 691: list of commercial standards
1942

LCIRC 691r1942
10.6028/NBS.LCIRC.691r1942
Download PDF | Download Citation
Letter Circular 692: radio (supersedes Letter Circular 606)
1942

LCIRC 692
10.6028/NBS.LCIRC.692
Download PDF | Download Citation
Letter Circular 693: variety reduction effected by the application of simplified practice (supersedes Letter Circular 651)
1942

LCIRC 693
10.6028/NBS.LCIRC.693
Download PDF | Download Citation
Letter Circular 694: thermostat setting and economy in house heating
1942

LCIRC 694
10.6028/NBS.LCIRC.694
Download PDF | Download Citation
Letter Circular 695: list of commercial standards (supersedes Letter Circular 691)
1942

LCIRC 695r1942
10.6028/NBS.LCIRC.695r1942
Download PDF | Download Citation
Letter Circular 696: list of publications of interest to the general public (superseding Letter Circular 586)
1942

LCIRC 696r1942
10.6028/NBS.LCIRC.696r1942
Download PDF | Download Citation
Letter Circular 697: alphabetical list of simplified practice recommendations (supersedes Letter Circular 687)
1942

LCIRC 697r1942
10.6028/NBS.LCIRC.697r1942
Download PDF | Download Citation
Letter Circular 698: hardened copper (revision of Letter Circular 61 and 444)
1942

LCIRC 698
10.6028/NBS.LCIRC.698
Download PDF | Download Citation
Letter Circular 699: electrodeposition (supersedes Letter Circular 625)
1942

LCIRC 699r1942
10.6028/NBS.LCIRC.699r1942
Download PDF | Download Citation
Letter Circular 700: railway track scale testing service of the National Bureau of Standards fiscal year 1942 (July 1, 1941 to June 30, 1942)
1942

LCIRC 700
10.6028/NBS.LCIRC.700
Download PDF | Download Citation
Letter Circular 701: solders and soldering (supersedes Letter Circular 493 and 343)
1942

LCIRC 701
10.6028/NBS.LCIRC.701
Download PDF | Download Citation
Letter Circular 702: home heating problems (superseding Letter Circular 648)
1942

LCIRC 702r1942
10.6028/NBS.LCIRC.702r1942
Download PDF | Download Citation
Letter Circular 703: luminous and fluorescent paints (replacing Letter Circular 678)
1942

LCIRC 703
10.6028/NBS.LCIRC.703
Download PDF | Download Citation
Letter Circular 704: optical instruments, refractometry and optical properties of glass (supersedes Letter Circular 673)
1942

LCIRC 704
10.6028/NBS.LCIRC.704
Download PDF | Download Citation
Letter Circular 705: list of commercial standards (supersedes Letter Circular 695)
1942

LCIRC 705r1942
10.6028/NBS.LCIRC.705r1942
Download PDF | Download Citation
Letter Circular 706: devices for air raid warnings (supersedes Letter Circular 685)
1942

LCIRC 706
10.6028/NBS.LCIRC.706
Download PDF | Download Citation
Letter Circular 707: rubber: list of publications (supersedes Letter Circular 634)
1942

LCIRC 707
10.6028/NBS.LCIRC.707
Download PDF | Download Citation
Letter Circular 708: aeronautics (supersedes Letter Circular 524)
1942

LCIRC 708
10.6028/NBS.LCIRC.708
Download PDF | Download Citation
Letter Circular 709: paints and other protective coatings for tires
1942

LCIRC 709
10.6028/NBS.LCIRC.709
Download PDF | Download Citation
Letter Circular 710: some physical properties of butadiene and styrene
1942
Lawrence A Wood, Catherine F Higgins
LCIRC 710
10.6028/NBS.LCIRC.710
Download PDF | Download Citation
Letter Circular 711: thermostat setting and economy in house heating (supersedes Letter Circular 694)
1942

LCIRC 711
10.6028/NBS.LCIRC.711
Download PDF | Download Citation
Letter Circular 624: list of commercial standards (supersedes Letter Circular 609)
1941

LCIRC 624r1941
10.6028/NBS.LCIRC.624r1941
Download PDF | Download Citation
Letter Circular 625: electrodeposition (supersedes Letter Circular 566)
1941

LCIRC 625r1941
10.6028/NBS.LCIRC.625r1941
Download PDF | Download Citation
Letter Circular 626: guide to the literature on rubber (supersedes Letter Circular 501)
1941

LCIRC 626
10.6028/NBS.LCIRC.626
Download PDF | Download Citation
Letter Circular 627: the care of floors (supersedes Letter Circular 388)
1941

LCIRC 627
10.6028/NBS.LCIRC.627
Download PDF | Download Citation
Letter Circular 628: colorimetry and spectrophometry
1941

LCIRC 628
10.6028/NBS.LCIRC.628
Download PDF | Download Citation
Letter Circular 629: list of simplified practice recommendations (supersedes Letter Circular 612)
1941

LCIRC 629r1941
10.6028/NBS.LCIRC.629r1941
Download PDF | Download Citation
Letter Circular 630: bluing of iron and steel
1941

LCIRC 630
10.6028/NBS.LCIRC.630
Download PDF | Download Citation
Letter Circular 631: sun lamps, health lamps; carbon and mercury arc lamps (supersedes Letter Circular 462)
1941

LCIRC 631
10.6028/NBS.LCIRC.631
Download PDF | Download Citation
Letter Circular 632: sound absorption coefficients of the more common acoustic materials (supersedes Letter Circular 573)
1941

LCIRC 632
10.6028/NBS.LCIRC.632
Download PDF | Download Citation
Letter Circular 633: classification of acoustic materials (supersedes Letter Circular 585)
1941

LCIRC 633
10.6028/NBS.LCIRC.633
Download PDF | Download Citation
Letter Circular 634: rubber - list of publications (supersedes Letter Circular 532)
1941

LCIRC 634
10.6028/NBS.LCIRC.634
Download PDF | Download Citation
Letter Circular 635: radiometry (supersedes Letter Circular 448)
1941

LCIRC 635
10.6028/NBS.LCIRC.635
Download PDF | Download Citation
Letter Circular 636: publications on acoustics by members of the staff of the National Bureau of Standards (supersedes Letter Circular 380)
1941

LCIRC 636
10.6028/NBS.LCIRC.636
Download PDF | Download Citation
Letter Circular 637: losses of gasoline in storage and handling (supersedes Letter Circular 427)
1941

LCIRC 637
10.6028/NBS.LCIRC.637
Download PDF | Download Citation
Letter Circular 638: testing of hosiery
1941

LCIRC 638
10.6028/NBS.LCIRC.638
Download PDF | Download Citation
Letter Circular 639: dyeing and finishing of hosiery (supersedes Letter Circular 436)
1941

LCIRC 639
10.6028/NBS.LCIRC.639
Download PDF | Download Citation
Letter Circular 640: selection and care of hosiery
1941

LCIRC 640
10.6028/NBS.LCIRC.640
Download PDF | Download Citation
Letter Circular 641: cement (supersedes Letter Circular 494)
1941

LCIRC 641
10.6028/NBS.LCIRC.641
Download PDF | Download Citation
Letter Circular 642: concrete and reinforced concrete (supersedes Letter Circular 495)
1941

LCIRC 642
10.6028/NBS.LCIRC.642
Download PDF | Download Citation
Letter Circular 643: structural clay products, stone, and masonry (supersedes Letter Circular 496)
1941

LCIRC 643r1941
10.6028/NBS.LCIRC.643r1941
Download PDF | Download Citation
Letter Circular 644: list of commercial standards (supersedes Letter Circular 624)
1941

LCIRC 644r1941
10.6028/NBS.LCIRC.644r1941
Download PDF | Download Citation
Letter Circular 645: methods of using standard frequencies broadcast by radio (supersedes Letter Circular 567)
1941

LCIRC 645
10.6028/NBS.LCIRC.645
Download PDF | Download Citation
Letter Circular 646: materials in the National Bureau of Standards soil-corrosion tests
1941

LCIRC 646
10.6028/NBS.LCIRC.646
Download PDF | Download Citation
Letter Circular 647: list of published material relating to home building and maintenance (supersedes Letter Circular 287)
1941

LCIRC 647
10.6028/NBS.LCIRC.647
Download PDF | Download Citation
Letter Circular 648: home heating problems: list of publications and articles (superseding Letter Circular 284)
1941

LCIRC 648r1941
10.6028/NBS.LCIRC.648r1941
Download PDF | Download Citation
Letter Circular 649: domestic heating and air conditioning
1941

LCIRC 649
10.6028/NBS.LCIRC.649
Download PDF | Download Citation
Letter Circular 650: list of weights and measures offices of the States and District of Columbia (supersedes Letter Circular 560)
1941

LCIRC 650
10.6028/NBS.LCIRC.650
Download PDF | Download Citation
Letter Circular 651: variety reduction effected by the application of simplified practice (supersedes Letter Circular 504)
1941

LCIRC 651
10.6028/NBS.LCIRC.651
Download PDF | Download Citation
Letter Circular 652: fluorescent lamps
1941

LCIRC 652
10.6028/NBS.LCIRC.652
Download PDF | Download Citation
Letter Circular 653: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 599)
1941

LCIRC 653r1941
10.6028/NBS.LCIRC.653r1941
Download PDF | Download Citation
Letter Circular 654: alphabetical list of simplified practice recommendations (supersedes Letter Circular 629)
1941

LCIRC 654r1941
10.6028/NBS.LCIRC.654r1941
Download PDF | Download Citation
Letter Circular 655: list of commercial standard (supersedes Letter Circular 644)
1941

LCIRC 655r1941
10.6028/NBS.LCIRC.655r1941
Download PDF | Download Citation
Letter Circular 656: electric batteries and standard cells (supersedes Letter Circular 610)
1941

LCIRC 656
10.6028/NBS.LCIRC.656
Download PDF | Download Citation
Letter Circular 657: National Bureau of Standards specification for proving rings for calibrating testing machines (superseding Letter Circular 548)
1941

LCIRC 657
10.6028/NBS.LCIRC.657
Download PDF | Download Citation
Letter Circular 658: radio distance ranges, summer 1941 and winter 1941-42 (supersedes Letter Circular 615)
1941

LCIRC 658
10.6028/NBS.LCIRC.658
Download PDF | Download Citation
Letter Circular 659: paint, varnish and bituminous materials (replacing Letter Circular 59, 212, 291 and 574)
1941

LCIRC 659
10.6028/NBS.LCIRC.659
Download PDF | Download Citation
Letter Circular 660: electrical interference with radio reception (supersedes Letter Circular 491)
1941

LCIRC 660
10.6028/NBS.LCIRC.660
Download PDF | Download Citation
Letter Circular 661: fire resistance and fire prevention (supersedes Letter Circular 165)
1941

LCIRC 661
10.6028/NBS.LCIRC.661
Download PDF | Download Citation
Letter Circular 662: specifications for the manufacture and installation of four-section and of two-section, knife-edge railway track scales (supersedes NBS Circular C83 and C333)
1941

LCIRC 662
10.6028/NBS.LCIRC.662
Download PDF | Download Citation
Letter Circular 663: specifications for the manufacture and installation of motor truck, built-in, self-contained, and portable scales (supersedes Letter Circular 152)
1941

LCIRC 663
10.6028/NBS.LCIRC.663
Download PDF | Download Citation
Letter Circular 664: metallurgy - publications by members of the staff of the National Bureau of Standards (1931-1941) (supersedes Letter Circular 522)
1941

LCIRC 664
10.6028/NBS.LCIRC.664
Download PDF | Download Citation
Letter Circular 665: color charts - a descriptive list (superseding Letter Circular 526)
1941

LCIRC 665
10.6028/NBS.LCIRC.665
Download PDF | Download Citation
Letter Circular 666: weights and measures, a selected list of publications of the National Bureau of Standards (supersedes Letter Circular 593)
1941

LCIRC 666
10.6028/NBS.LCIRC.666
Download PDF | Download Citation
Letter Circular 667: leather (supersedes Letter Circular 577)
1941

LCIRC 667
10.6028/NBS.LCIRC.667
Download PDF | Download Citation
Letter Circular 668: fifty books on horology
1941

LCIRC 668
10.6028/NBS.LCIRC.668
Download PDF | Download Citation
Letter Circular 669: list of commercial standards (supersedes Letter Circular 655)
1941

LCIRC 669r1941
10.6028/NBS.LCIRC.669r1941
Download PDF | Download Citation
Letter Circular 670: alphabetical list of simplified practice recommendations (supersedes Letter Circular 654)
1941

LCIRC 670r1941
10.6028/NBS.LCIRC.670r1941
Download PDF | Download Citation
Letter Circular 671: sources of information on paint and related materials (replacing Letter Circular 478 and 542)
1941

LCIRC 671
10.6028/NBS.LCIRC.671
Download PDF | Download Citation
Letter Circular 672: electrical measuring instruments, meters and their accessories (superseding Letter Circular 554, 364, and 233)
1941

LCIRC 672
10.6028/NBS.LCIRC.672
Download PDF | Download Citation
Letter Circular 673: optical instruments, refractometry and optical properties of glass (supersedes Letter Circular 571)
1941

LCIRC 673
10.6028/NBS.LCIRC.673
Download PDF | Download Citation
Letter Circular 674: railway track scale testing service of the National Bureau of Standards fiscal year 1941 (July 1, 1940 to June 30, 1941)
1941

LCIRC 674
10.6028/NBS.LCIRC.674
Download PDF | Download Citation
Letter Circular 579: list of commercial standards (supersedes Letter Circular 568)
1940

LCIRC 579r1940
10.6028/NBS.LCIRC.579r1940
Download PDF | Download Citation
Letter Circular 581: color of illuminant and efficiency of the worker (superseding Letter Circular 352)
1940

LCIRC 581
10.6028/NBS.LCIRC.581
Download PDF | Download Citation
Letter Circular 582: list of simplified practice recommendations (supersedes Letter Circular 561)
1940

LCIRC 582r1940
10.6028/NBS.LCIRC.582r1940
Download PDF | Download Citation
Letter Circular 583: literature on drycleaning
1940

LCIRC 583
10.6028/NBS.LCIRC.583
Download PDF | Download Citation
Letter Circular 584: standard specifications for sieves (supersedes Letter Circular 74)
1940

LCIRC 584
10.6028/NBS.LCIRC.584
Download PDF | Download Citation
Letter Circular 585: classification of acoustic materials
1940

LCIRC 585
10.6028/NBS.LCIRC.585
Download PDF | Download Citation
Letter Circular 586: list of publications of interest to the general public (superseding Letter Circular 416)
1940

LCIRC 586
10.6028/NBS.LCIRC.586
Download PDF | Download Citation
Letter Circular 587: ceramics (miscellaneous) (supersedes Letter Circular 131)
1940

LCIRC 587
10.6028/NBS.LCIRC.587
Download PDF | Download Citation
Letter Circular 587A: whiteware (supersedes Letter Circular 131-A)
1940

LCIRC 587A
10.6028/NBS.LCIRC.587A
Download PDF | Download Citation
Letter Circular 587C: refractories (supersedes Letter Circular 131C)
1940

LCIRC 587C
10.6028/NBS.LCIRC.587C
Download PDF | Download Citation
Letter Circular 587D: enamels (supersedes Letter Circular 131D)
1940

LCIRC 587D
10.6028/NBS.LCIRC.587D
Download PDF | Download Citation
Letter Circular 588: the National Association of Hosiery Manufactures NAHM snag resistance tester
1940
Howard E Shearer, EMax Schenke
LCIRC 588
10.6028/NBS.LCIRC.588
Download PDF | Download Citation
Letter Circular 589: list of commercial standards (supersedes Letter Circular 579)
1940

LCIRC 589r1940
10.6028/NBS.LCIRC.589r1940
Download PDF | Download Citation
Letter Circular 590: simplified practice, its purpose and application (supersedes Letter Circular 456)
1940

LCIRC 590
10.6028/NBS.LCIRC.590
Download PDF | Download Citation
Letter Circular 591: standards of frequency and musical pitch broadcast by National Bureau of Standards (replaces Letter Circular 565)
1940

LCIRC 591r1940
10.6028/NBS.LCIRC.591r1940
Download PDF | Download Citation
Letter Circular 592: building materials, building standards, home building
1940

LCIRC 592
10.6028/NBS.LCIRC.592
Download PDF | Download Citation
Letter Circular 593: weights and measures (supersedes Letter Circular 562)
1940

LCIRC 593
10.6028/NBS.LCIRC.593
Download PDF | Download Citation
Letter Circular 594: list of simplified practice recommendations (supersedes Letter Circular 582)
1940

LCIRC 594r1940
10.6028/NBS.LCIRC.594r1940
Download PDF | Download Citation
Letter Circular 595: engineering mechanics (superseding Letter Circular 316)
1940

LCIRC 595
10.6028/NBS.LCIRC.595
Download PDF | Download Citation
Letter Circular 596: domestic heating and air conditioning
1940

LCIRC 596
10.6028/NBS.LCIRC.596
Download PDF | Download Citation
Letter Circular 597: carbon paper and typewriter ribbons
1940

LCIRC 597
10.6028/NBS.LCIRC.597
Download PDF | Download Citation
Letter Circular 599: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 432)
1940

LCIRC 599r1940
10.6028/NBS.LCIRC.599r1940
Download PDF | Download Citation
Letter Circular 600: timekeeping through the ages
1940
Katharine S Vandoren
LCIRC 600
10.6028/NBS.LCIRC.600
Download PDF | Download Citation
Letter Circular 601: sources of information on the properties of metals and alloys (books)
1940

LCIRC 601
10.6028/NBS.LCIRC.601
Download PDF | Download Citation
Letter Circular 602: x-rays
1940

LCIRC 602
10.6028/NBS.LCIRC.602
Download PDF | Download Citation
Letter Circular 603: outside house painting
1940

LCIRC 603
10.6028/NBS.LCIRC.603
Download PDF | Download Citation
Letter Circular 604: list of commercial standards (supersedes Letter Circular 589)
1940

LCIRC 604r1940
10.6028/NBS.LCIRC.604r1940
Download PDF | Download Citation
Letter Circular 605: export trade expansion and retention through certification of quality
1940

LCIRC 605
10.6028/NBS.LCIRC.605
Download PDF | Download Citation
Letter Circular 606: radio (supersedes Letter Circular 40)
1940

LCIRC 606
10.6028/NBS.LCIRC.606
Download PDF | Download Citation
Letter Circular 607: the certification plan, its significance, scope and application to selected Federal specifications and commercial standards (superseding Letter Circular 559)
1940

LCIRC 607
10.6028/NBS.LCIRC.607
Download PDF | Download Citation
Letter Circular 608: detergents and related subjects (superseding Letter Circular 403)
1940

LCIRC 608
10.6028/NBS.LCIRC.608
Download PDF | Download Citation
Letter Circular 609: list of commercial standards (supersedes Letter Circular 604)
1940

LCIRC 609r1940
10.6028/NBS.LCIRC.609r1940
Download PDF | Download Citation
Letter Circular 610: electric batteries and standard cells (supersedes Letter Circular 553)
1940

LCIRC 610
10.6028/NBS.LCIRC.610
Download PDF | Download Citation
Letter Circular 611: sources of radio information (supersedes Letter Circular 578)
1940

LCIRC 611
10.6028/NBS.LCIRC.611
Download PDF | Download Citation
Letter Circular 612: list of simplified practice recommendations (supersedes Letter Circular 594)
1940

LCIRC 612r1940
10.6028/NBS.LCIRC.612r1940
Download PDF | Download Citation
Letter Circular 613: automobile engine lubricating oils (supersedes Letter Circular 407)
1940

LCIRC 613r1940
10.6028/NBS.LCIRC.613r1940
Download PDF | Download Citation
Letter Circular 614: radio transmission and the ionosphere (supersedes Letter Circular 575)
1940

LCIRC 614
10.6028/NBS.LCIRC.614
Download PDF | Download Citation
Letter Circular 615: distance ranges of radio waves (supersedes Letter Circular 317)
1940

LCIRC 615
10.6028/NBS.LCIRC.615
Download PDF | Download Citation
Letter Circular 616: etching of designs and lettering on metals
1940

LCIRC 616
10.6028/NBS.LCIRC.616
Download PDF | Download Citation
Letter Circular 617: measurement of the reflectance of manila rope fiber (supersedes Letter Circular 393)
1940

LCIRC 617
10.6028/NBS.LCIRC.617
Download PDF | Download Citation
Letter Circular 618: export trade expansion and retention through certification of quality (supersedes Letter Circular 605)
1940

LCIRC 618
10.6028/NBS.LCIRC.618
Download PDF | Download Citation
Letter Circular 619: standards and specifications for building and construction materials, fixtures, supplies, and equipment (superseding Letter Circular 570)
1940

LCIRC 619r1940
10.6028/NBS.LCIRC.619r1940
Download PDF | Download Citation
Letter Circular 620: the model state law on weights and measures (includes amendments adopted in 1936 and 1940)
1940

LCIRC 620
10.6028/NBS.LCIRC.620
Download PDF | Download Citation
Letter Circular 621: railway track scale testing service of the National Bureau of Standards fiscal year 1940 (July 1, 1939 to June 30, 1940)
1940

LCIRC 621
10.6028/NBS.LCIRC.621
Download PDF | Download Citation
Letter Circular 622: building regulation (superseding Letter Circular 555)
1940

LCIRC 622
10.6028/NBS.LCIRC.622
Download PDF | Download Citation
Letter Circular 623: weights of coal
1940

LCIRC 623
10.6028/NBS.LCIRC.623
Download PDF | Download Citation
Letter Circular 502M: methods of investigation of cement-water paints
1939

LCIRC 502M
10.6028/NBS.LCIRC.502M
Download PDF | Download Citation
Letter Circular 541: classification of acoustic materials
1939

LCIRC 541
10.6028/NBS.LCIRC.541
Download PDF | Download Citation
Letter Circular 542: list of publications relating to paint, painting, varnish, lacquer, bitmens and allied subjects (supersedes Letter Circular 478)
1939

LCIRC 542
10.6028/NBS.LCIRC.542
Download PDF | Download Citation
Letter Circular 543: paper and related subjects (supersedes Letter Circular 447)
1939

LCIRC 543
10.6028/NBS.LCIRC.543
Download PDF | Download Citation
Letter Circular 544: policy of the National Bureau of Standards with regard to tests for agencies outside the Bureau
1939

LCIRC 544
10.6028/NBS.LCIRC.544
Download PDF | Download Citation
Letter Circular 545: photoelectric colorimeters (superseding Letter Circular 473)
1939

LCIRC 545
10.6028/NBS.LCIRC.545
Download PDF | Download Citation
Letter Circular 546: gases (supersedes Letter Circular 80)
1939

LCIRC 546
10.6028/NBS.LCIRC.546
Download PDF | Download Citation
Letter Circular 547: preparation and colorimetric properties of a magnesium-oxide reflectance standard (superseding Letter Circular 395)
1939

LCIRC 547
10.6028/NBS.LCIRC.547
Download PDF | Download Citation
Letter Circular 548: specification for proving rings for calibrating testing machines (superseding Letter Circular 409)
1939

LCIRC 548
10.6028/NBS.LCIRC.548
Download PDF | Download Citation
Letter Circular 549: information on ultraviolet transparency of window materials and fabrics (supersedes Letter Circular 235, 429, and 511)
1939

LCIRC 549
10.6028/NBS.LCIRC.549
Download PDF | Download Citation
Letter Circular 550: fluorescence and phosphorescence
1939

LCIRC 550
10.6028/NBS.LCIRC.550
Download PDF | Download Citation
Letter Circular 551: good gasoline (supersedes Letter Circular 281)
1939

LCIRC 551
10.6028/NBS.LCIRC.551
Download PDF | Download Citation
Letter Circular 552: building materials and structures reports
1939

LCIRC 552
10.6028/NBS.LCIRC.552
Download PDF | Download Citation
Letter Circular 553: electric batteries and standard cells: publications by the staff of the National Bureau of Standards and references to other sources of information
1939

LCIRC 553
10.6028/NBS.LCIRC.553
Download PDF | Download Citation
Letter Circular 554: electrical measuring instruments, meters and their accessories (superseding Letter Circular 364 and 233)
1939

LCIRC 554
10.6028/NBS.LCIRC.554
Download PDF | Download Citation
Letter Circular 555: building regulation (superseding Letter Circular 458)
1939

LCIRC 555
10.6028/NBS.LCIRC.555
Download PDF | Download Citation
Letter Circular 556: automotive brake lining
1939

LCIRC 556
10.6028/NBS.LCIRC.556
Download PDF | Download Citation
Letter Circular 557: list of commercial standards
1939

LCIRC 557r1939
10.6028/NBS.LCIRC.557r1939
Download PDF | Download Citation
Letter Circular 558: dental materials
1939

LCIRC 558
10.6028/NBS.LCIRC.558
Download PDF | Download Citation
Letter Circular 559: the certification plan its significance, scope and application to selected Federal specifications and commercial standards
1939

LCIRC 559
10.6028/NBS.LCIRC.559
Download PDF | Download Citation
Letter Circular 560: list of weights and measures offices of the States and District of Columbia (supersedes Letter Circular 390)
1939

LCIRC 560
10.6028/NBS.LCIRC.560
Download PDF | Download Citation
Letter Circular 561: list of simplified practice recommendations (supersedes Letter Circular 345)
1939

LCIRC 561r1939
10.6028/NBS.LCIRC.561r1939
Download PDF | Download Citation
Letter Circular 562: weights and measures: National Bureau of Standards publications of general interest (supersedes Letter Circular 492)
1939

LCIRC 562
10.6028/NBS.LCIRC.562
Download PDF | Download Citation
Letter Circular 563: classification and tolerances for commercial standard weights that will be accepted for certification by the National Bureau of Standards
1939

LCIRC 563
10.6028/NBS.LCIRC.563
Download PDF | Download Citation
Letter Circular 564: classification and tolerances for laboratory weights that will be accepted for certification by the National Bureau of Standards
1939

LCIRC 564
10.6028/NBS.LCIRC.564
Download PDF | Download Citation
Letter Circular 565: standard frequencies and other services broadcast by National Bureau of Standards
1939

LCIRC 565
10.6028/NBS.LCIRC.565
Download PDF | Download Citation
Letter Circular 566: electrodeposition (supersedes Letter Circular 121)
1939

LCIRC 566r1939
10.6028/NBS.LCIRC.566r1939
Download PDF | Download Citation
Letter Circular 567: methods of using standard frequencies broadcast by radio (replaces Letter Circular 498)
1939

LCIRC 567
10.6028/NBS.LCIRC.567
Download PDF | Download Citation
Letter Circular 568: list of commercial standards (supersedes Letter Circular 557)
1939

LCIRC 568r1939
10.6028/NBS.LCIRC.568r1939
Download PDF | Download Citation
Letter Circular 569: gypsum
1939

LCIRC 569
10.6028/NBS.LCIRC.569
Download PDF | Download Citation
Letter Circular 570: standards and specifications for buildings and construction materials, fixtures, supplies, and equipment (superseding Letter Circular 323)
1939

LCIRC 570r1939
10.6028/NBS.LCIRC.570r1939
Download PDF | Download Citation
Letter Circular 571: optical instruments, refractometry, and optical glass (superseding Letter Circular 485)
1939

LCIRC 571
10.6028/NBS.LCIRC.571
Download PDF | Download Citation
Letter Circular 572: device for testing snag resistance of stockings
1939

LCIRC 572
10.6028/NBS.LCIRC.572
Download PDF | Download Citation
Letter Circular 573: sound absorption coefficients of the more common acoustic materials
1939

LCIRC 573
10.6028/NBS.LCIRC.573
Download PDF | Download Citation
Letter Circular 574: paint, varnish and bituminous materials (replacing Letter Circular 59, 212, and 291)
1939

LCIRC 574
10.6028/NBS.LCIRC.574
Download PDF | Download Citation
Letter Circular 575: the ionosphere and radio transmission conditions, with special reference to the observing and reporting service of the National Bureau of Standards (replaces Letter Circular 499)
1939

LCIRC 575
10.6028/NBS.LCIRC.575
Download PDF | Download Citation
Letter Circular 576: inorganic analytical chemistry (supersedes Letter Circular 536)
1939

LCIRC 576
10.6028/NBS.LCIRC.576
Download PDF | Download Citation
Letter Circular 577: Leather
1939

LCIRC 577
10.6028/NBS.LCIRC.577
Download PDF | Download Citation
Letter Circular 578: sources of radio information (replaces Letter Circular 513)
1939

LCIRC 578r1939
10.6028/NBS.LCIRC.578r1939
Download PDF | Download Citation
Letter Circular 580: railway track scale testing service of the National Bureau of Standards fiscal year 1939 (July 1, 1938 to June 30, 1939)
1939

LCIRC 580
10.6028/NBS.LCIRC.580
Download PDF | Download Citation
Letter Circular 502J: heat transfer measurements in connection with thermal insulation of low-cost housing
1938

LCIRC 502J
10.6028/NBS.LCIRC.502J
Download PDF | Download Citation
Letter Circular 502K: ventilation problems (including air infiltration of windows and doors) as related to low-cost housing
1938

LCIRC 502K
10.6028/NBS.LCIRC.502K
Download PDF | Download Citation
Letter Circular 502L: heating equipment as related to low-cost housing
1938

LCIRC 502L
10.6028/NBS.LCIRC.502L
Download PDF | Download Citation
Letter Circular 510: protective coatings for underground piping systems (superseding Letter Circular 435)
1938

LCIRC 510
10.6028/NBS.LCIRC.510
Download PDF | Download Citation
Letter Circular 511: information on ultraviolet transparency of window materials and fabrics (supersedes Letter Circular 235, 429, and 113)
1938

LCIRC 511
10.6028/NBS.LCIRC.511
Download PDF | Download Citation
Letter Circular 512: automobile costs
1938

LCIRC 512
10.6028/NBS.LCIRC.512
Download PDF | Download Citation
Letter Circular 513: sources of radio information (replaces Letter Circular 474)
1938

LCIRC 513r1938
10.6028/NBS.LCIRC.513r1938
Download PDF | Download Citation
Letter Circular 514: dampness in masonry walls above grade (replaces Letter Circular 391)
1938

LCIRC 514
10.6028/NBS.LCIRC.514
Download PDF | Download Citation
Letter Circular 515: selenium cells; photocells; thermopiles (supersedes Letter Circular 199)
1938

LCIRC 515r1938
10.6028/NBS.LCIRC.515r1938
Download PDF | Download Citation
Letter Circular 516: legibility of ledgers
1938

LCIRC 516
10.6028/NBS.LCIRC.516
Download PDF | Download Citation
Letter Circular 517: motorists' manual of weights and measures
1938

LCIRC 517
10.6028/NBS.LCIRC.517
Download PDF | Download Citation
Letter Circular 518: the corrosively of soils (supersedes Letter Circular 433)
1938

LCIRC 518
10.6028/NBS.LCIRC.518
Download PDF | Download Citation
Letter Circular 519: cathodic protection of pipelines
1938

LCIRC 519
10.6028/NBS.LCIRC.519
Download PDF | Download Citation
Letter Circular 520: automobile costs (supersedes Letter Circular 512)
1938

LCIRC 520
10.6028/NBS.LCIRC.520
Download PDF | Download Citation
Letter Circular 521: corrosion and protection of underground tanks and burial vaults
1938

LCIRC 521
10.6028/NBS.LCIRC.521
Download PDF | Download Citation
Letter Circular 522: metallurgy:publications by staff of the National Bureau of Standards
1938

LCIRC 522
10.6028/NBS.LCIRC.522
Download PDF | Download Citation
Letter Circular 523: lubrication - publications by staff of the National Bureau of Standards 1910-1937
1938

LCIRC 523
10.6028/NBS.LCIRC.523
Download PDF | Download Citation
Letter Circular 524: aeronautical publications (supersedes Letter Circular 325)
1938

LCIRC 524
10.6028/NBS.LCIRC.524
Download PDF | Download Citation
Letter Circular 525: color harmony: an annotated bibliography (superseding Letter Circular 356)
1938

LCIRC 525
10.6028/NBS.LCIRC.525
Download PDF | Download Citation
Letter Circular 526: color charts; a descriptive list (superseding Letter Circular 358 and 481)
1938

LCIRC 526
10.6028/NBS.LCIRC.526
Download PDF | Download Citation
Letter Circular 527: abrasives and abrasive products
1938

LCIRC 527
10.6028/NBS.LCIRC.527
Download PDF | Download Citation
Letter Circular 528: testing laboratories equipped for thermal expansion tests of solids (supersedes Letter Circular 234)
1938

LCIRC 528
10.6028/NBS.LCIRC.528
Download PDF | Download Citation
Letter Circular 529: vehicle-scale testing service of the National Bureau of Standards conducted in cooperation with the States, November, 1936 - May, 1938
1938

LCIRC 529
10.6028/NBS.LCIRC.529
Download PDF | Download Citation
Letter Circular 530: salt spray test
1938
WH Mutchler, RW Buzzard, PWC Strausser
LCIRC 530
10.6028/NBS.LCIRC.530
Download PDF | Download Citation
Letter Circular 531: photography and its applications (revision of Letter Circular 332)
1938

LCIRC 531r1938
10.6028/NBS.LCIRC.531r1938
Download PDF | Download Citation
Letter Circular 532: rubber - list of publications (replaces Letter Circular 178)
1938

LCIRC 532
10.6028/NBS.LCIRC.532
Download PDF | Download Citation
Letter Circular 533: sources of information on the properties of metals and alloys (books)
1938

LCIRC 533
10.6028/NBS.LCIRC.533
Download PDF | Download Citation
Letter Circular 534: commercial testing laboratories equipped for chemical analysis (supersedes Letter Circular 196)
1938

LCIRC 534
10.6028/NBS.LCIRC.534
Download PDF | Download Citation
Letter Circular 535: aluminum foil insulation (supersedes Letter Circular 465)
1938

LCIRC 535
10.6028/NBS.LCIRC.535
Download PDF | Download Citation
Letter Circular 536: inorganic analytical chemistry: publications by the staff of the National Bureau of Standards (1901-1938)
1938

LCIRC 536
10.6028/NBS.LCIRC.536
Download PDF | Download Citation
Letter Circular 537: railway track scale testing service of the National Bureau of Standards fiscal year 1938 (July 1, 1937 to June 30, 1938)
1938

LCIRC 537
10.6028/NBS.LCIRC.537
Download PDF | Download Citation
Letter Circular 538: transparent wrapping materials (replaces Letter Circular 455)
1938

LCIRC 538
10.6028/NBS.LCIRC.538
Download PDF | Download Citation
Letter Circular 539: sound absorption coefficients of the more common acoustic materials
1938

LCIRC 539
10.6028/NBS.LCIRC.539
Download PDF | Download Citation
Letter Circular 540: artificial abrasives and abrasive products (replaces Letter Circular 527)
1938

LCIRC 540
10.6028/NBS.LCIRC.540
Download PDF | Download Citation
Letter Circular 486: metals do not crystallize under vibration (replaces Letter Circular 204)
1937

LCIRC 486
10.6028/NBS.LCIRC.486
Download PDF | Download Citation
Letter Circular 487: nomenclature of copper alloys - brass and bronze (replaces Letter Circular 268)
1937

LCIRC 487
10.6028/NBS.LCIRC.487
Download PDF | Download Citation
Letter Circular 488: air conditioning
1937

LCIRC 488
10.6028/NBS.LCIRC.488
Download PDF | Download Citation
Letter Circular 489: inside wall paint for chemical laboratories (heat- and fume-resisting enamel paint)
1937

LCIRC 489
10.6028/NBS.LCIRC.489
Download PDF | Download Citation
Letter Circular 490: the availability to the public of the research and testing facilities of the National Bureau of Standards
1937

LCIRC 490
10.6028/NBS.LCIRC.490
Download PDF | Download Citation
Letter Circular 491: electrical interference with radio reception (replaces Letter Circular 415)
1937

LCIRC 491
10.6028/NBS.LCIRC.491
Download PDF | Download Citation
Letter Circular 492: weights and measures publications of general interest (supersedes Letter Circular 399)
1937

LCIRC 492
10.6028/NBS.LCIRC.492
Download PDF | Download Citation
Letter Circular 493: sodders and soldering (supersedes Letter Circular 343)
1937

LCIRC 493
10.6028/NBS.LCIRC.493
Download PDF | Download Citation
Letter Circular 494: cement:technical publications by members of the staff of the National Bureau of Standards
1937

LCIRC 494r1937
10.6028/NBS.LCIRC.494r1937
Download PDF | Download Citation
Letter Circular 495: concrete and reinforced concrete :technical publications by members of the staff of the National Bureau of Standards
1937

LCIRC 495r1937
10.6028/NBS.LCIRC.495r1937
Download PDF | Download Citation
Letter Circular 496: structural clay products, stone, and masonry: technical publications by members of the staff of the National Bureau of Standards
1937

LCIRC 496r1937
10.6028/NBS.LCIRC.496r1937
Download PDF | Download Citation
Letter Circular 497: services of the National Bureau of Standards to governmental purchasing agencies
1937

LCIRC 497
10.6028/NBS.LCIRC.497
Download PDF | Download Citation
Letter Circular 498: methods of using standard-frequency radio emissions (replaces Letter Circular 453)
1937

LCIRC 498
10.6028/NBS.LCIRC.498
Download PDF | Download Citation
Letter Circular 499: the weekly radio broadcasts of the National Bureau of Standards on the ionosphere and radio transmission conditions
1937

LCIRC 499
10.6028/NBS.LCIRC.499
Download PDF | Download Citation
Letter Circular 500: the National Bureau of Standards and the establishment of hard refined dextrose and laevulose industries
1937
Frederick Bates
LCIRC 500
10.6028/NBS.LCIRC.500
Download PDF | Download Citation
Letter Circular 501: a guide to the literature on rubber
1937

LCIRC 501
10.6028/NBS.LCIRC.501
Download PDF | Download Citation
Letter Circular 502: research program on building materials and structures, 1937-38
1937

LCIRC 502
10.6028/NBS.LCIRC.502
Download PDF | Download Citation
Letter Circular 502A: structural properties of low-cost house construction
1937

LCIRC 502A
10.6028/NBS.LCIRC.502A
Download PDF | Download Citation
Letter Circular 502B: the durability of building papers and fiberboards relative to low-cost housing
1937

LCIRC 502B
10.6028/NBS.LCIRC.502B
Download PDF | Download Citation
Letter Circular 502C: fire resistance tests of low-cost housing constructions
1937

LCIRC 502C
10.6028/NBS.LCIRC.502C
Download PDF | Download Citation
Letter Circular 502D: rain penetration in walls, waterproofing of masonry walls and the properties of joints in masonry in relation to low-cost housing
1937

LCIRC 502D
10.6028/NBS.LCIRC.502D
Download PDF | Download Citation
Letter Circular 502E: plumbing materials and equipment as related to low-cost housing
1937

LCIRC 502E
10.6028/NBS.LCIRC.502E
Download PDF | Download Citation
Letter Circular 502F: investigation or low-cost floor coverings
1937

LCIRC 502F
10.6028/NBS.LCIRC.502F
Download PDF | Download Citation
Letter Circular 502G: roofing materials for low-cost housing construction
1937

LCIRC 502G
10.6028/NBS.LCIRC.502G
Download PDF | Download Citation
Letter Circular 502H: surface treatment for corrosion protection of steel members for low-cost housing construction
1937

LCIRC 502H
10.6028/NBS.LCIRC.502H
Download PDF | Download Citation
Letter Circular 502I: investigation of plastic caulking materials for low-cost housing construction
1937

LCIRC 502I
10.6028/NBS.LCIRC.502I
Download PDF | Download Citation
Letter Circular 503: propane, butane, and related fuels (supersedes Letter Circular 292)
1937

LCIRC 503
10.6028/NBS.LCIRC.503
Download PDF | Download Citation
Letter Circular 504: variety reduction effected by the application of simplified practice through cooperative efforts of industry and the National Bureau of Standards
1937

LCIRC 504
10.6028/NBS.LCIRC.504
Download PDF | Download Citation
Letter Circular 505: classification of acoustic materials
1937

LCIRC 505
10.6028/NBS.LCIRC.505
Download PDF | Download Citation
Letter Circular 506: sound absorption coefficients of the more common acoustic materials
1937

LCIRC 506
10.6028/NBS.LCIRC.506
Download PDF | Download Citation
Letter Circular 507: publications on polarimetry and its application to the sugars and their derivatives (revision of Letter Circular 272)
1937

LCIRC 507r1937
10.6028/NBS.LCIRC.507r1937
Download PDF | Download Citation
Letter Circular 508: odorous fumes from sulphate pulp mills
1937

LCIRC 508
10.6028/NBS.LCIRC.508
Download PDF | Download Citation
Letter Circular 509: railway track scale testing service of the National Bureau of Standards fiscal year 1937 (July 1, 1936 to June 30, 1937)
1937

LCIRC 509
10.6028/NBS.LCIRC.509
Download PDF | Download Citation
Letter Circular 460: tests of resistance apparatus (superseding Letter Circular 221)
1936

LCIRC 460
10.6028/NBS.LCIRC.460
Download PDF | Download Citation
Letter Circular 461: permanent magnet steel
1936

LCIRC 461
10.6028/NBS.LCIRC.461
Download PDF | Download Citation
Letter Circular 462: sun lamps, health lamps; carbon and mercury arc lamps
1936

LCIRC 462
10.6028/NBS.LCIRC.462
Download PDF | Download Citation
Letter Circular 463: standard thread for tripods of surveying instruments
1936

LCIRC 463
10.6028/NBS.LCIRC.463
Download PDF | Download Citation
Letter Circular 464: wood and shingle stains (superseding Letter Circular 64)
1936

LCIRC 464
10.6028/NBS.LCIRC.464
Download PDF | Download Citation
Letter Circular 465: aluminum foil insulation
1936

LCIRC 465
10.6028/NBS.LCIRC.465
Download PDF | Download Citation
Letter Circular 466: procedure for testing women's full-fashioned silk hosiery with the National Bureau of Standards hosiery testing machine
1936

LCIRC 466
10.6028/NBS.LCIRC.466
Download PDF | Download Citation
Letter Circular 467: flameproofing of textiles
1936

LCIRC 467
10.6028/NBS.LCIRC.467
Download PDF | Download Citation
Letter Circular 468: decision of the Supreme Court of the United States and its effect on establishment of commercial standards
1936

LCIRC 468
10.6028/NBS.LCIRC.468
Download PDF | Download Citation
Letter Circular 469: publications on temperature measurements
1936

LCIRC 469
10.6028/NBS.LCIRC.469
Download PDF | Download Citation
Letter Circular 470: the reflectance of paints and pigments
1936

LCIRC 470
10.6028/NBS.LCIRC.470
Download PDF | Download Citation
Letter Circular 471: thermal insulation (replaces Letter Circular 421)
1936

LCIRC 471
10.6028/NBS.LCIRC.471
Download PDF | Download Citation
Letter Circular 472: domestic electric and gas refrigerators (replaces Letter Circular 412)
1936

LCIRC 472
10.6028/NBS.LCIRC.472
Download PDF | Download Citation
Letter Circular 473: photoelectric colorimeters
1936

LCIRC 473
10.6028/NBS.LCIRC.473
Download PDF | Download Citation
Letter Circular 474: sources of radio information (replaces Letter Circular 438)
1936

LCIRC 474r1936
10.6028/NBS.LCIRC.474r1936
Download PDF | Download Citation
Letter Circular 475: testing of electrical instruments, meters, and instrument transformers (revision of Letter Circular 222 and 342)
1936

LCIRC 475r1936
10.6028/NBS.LCIRC.475r1936
Download PDF | Download Citation
Letter Circular 476: bibliography on spark plugs
1936

LCIRC 476
10.6028/NBS.LCIRC.476
Download PDF | Download Citation
Letter Circular 477: sound absorption coefficients of the more common acoustic materials
1936

LCIRC 477
10.6028/NBS.LCIRC.477
Download PDF | Download Citation
Letter Circular 478: list of published material relating to paint, painting, varnish, lacquer, bitumen's and allied subjects
1936

LCIRC 478
10.6028/NBS.LCIRC.478
Download PDF | Download Citation
Letter Circular 479: sources of information on the properties of metals and alloys (books) (superseding Letter Circular 257)
1936

LCIRC 479
10.6028/NBS.LCIRC.479
Download PDF | Download Citation
Letter Circular 480: tests for non-metallic protective coatings for underground pipes
1936

LCIRC 480
10.6028/NBS.LCIRC.480
Download PDF | Download Citation
Letter Circular 481: color charts (superseding Letter Circular 358)
1936

LCIRC 481
10.6028/NBS.LCIRC.481
Download PDF | Download Citation
Letter Circular 482: railway track scale testing service of the National Bureau of Standards fiscal year 1936 (July 1, 1935 to June 30, 1936)
1936

LCIRC 482
10.6028/NBS.LCIRC.482
Download PDF | Download Citation
Letter Circular 483: classification of acoustic materials
1936

LCIRC 483
10.6028/NBS.LCIRC.483
Download PDF | Download Citation
Letter Circular 484: performance test of floor covering materials
1936

LCIRC 484
10.6028/NBS.LCIRC.484
Download PDF | Download Citation
Letter Circular 485: optical instruments, refractometry, and optical glass: publications (including those in non-governmental periodicals) (superseding Letter Circular 283)
1936

LCIRC 485
10.6028/NBS.LCIRC.485
Download PDF | Download Citation
Letter Circular 433: the corrosively of soils
1935

LCIRC 433
10.6028/NBS.LCIRC.433
Download PDF | Download Citation
Letter Circular 434: boil corrosion surveys
1935

LCIRC 434
10.6028/NBS.LCIRC.434
Download PDF | Download Citation
Letter Circular 435: protective coatings for underground piping systems
1935

LCIRC 435
10.6028/NBS.LCIRC.435
Download PDF | Download Citation
Letter Circular 436: treatments for silk stockings
1935

LCIRC 436
10.6028/NBS.LCIRC.436
Download PDF | Download Citation
Letter Circular 437: methods of using standard frequency radio emissions (replaces Letter Circular 404)
1935

LCIRC 437
10.6028/NBS.LCIRC.437
Download PDF | Download Citation
Letter Circular 438: sources of radio information (replaces Letter Circular 400)
1935

LCIRC 438
10.6028/NBS.LCIRC.438
Download PDF | Download Citation
Letter Circular 439: publications on gages (dimensional)
1935

LCIRC 439
10.6028/NBS.LCIRC.439
Download PDF | Download Citation
Letter Circular 440: testing laboratories equipped for metallurgical tests
1935

LCIRC 440r1935
10.6028/NBS.LCIRC.440r1935
Download PDF | Download Citation
Letter Circular 441: fire resistance of safes with cast-iron door frames and jambs
1935

LCIRC 441
10.6028/NBS.LCIRC.441
Download PDF | Download Citation
Letter Circular 442: books on watchmaking and timepieces
1935

LCIRC 442
10.6028/NBS.LCIRC.442
Download PDF | Download Citation
Letter Circular 443: status of municipal plumbing codes
1935

LCIRC 443r1935
10.6028/NBS.LCIRC.443r1935
Download PDF | Download Citation
Letter Circular 444: hardened copper (revision of Letter Circular 61 issued April 26, 1922, and revised March 19, 1927)
1935

LCIRC 444r1935
10.6028/NBS.LCIRC.444r1935
Download PDF | Download Citation
Letter Circular 445: painting of steam and hot water radiators
1935

LCIRC 445
10.6028/NBS.LCIRC.445
Download PDF | Download Citation
Letter Circular 446: automobile engine oil filters
1935

LCIRC 446
10.6028/NBS.LCIRC.446
Download PDF | Download Citation
Letter Circular 447: publications on paper and paper research by the staff of the National Bureau of Standards
1935

LCIRC 447
10.6028/NBS.LCIRC.447
Download PDF | Download Citation
Letter Circular 448: publications on radiometry from the National Bureau of Standards
1935

LCIRC 448
10.6028/NBS.LCIRC.448
Download PDF | Download Citation
Letter Circular 449: standards of length, mass, and time
1935

LCIRC 449
10.6028/NBS.LCIRC.449
Download PDF | Download Citation
Letter Circular 450: railway track scale testing service of the National Bureau of Standards fiscal year 1935 (July 1, 1934 to June 30, 1935)
1935

LCIRC 450
10.6028/NBS.LCIRC.450
Download PDF | Download Citation
Letter Circular 451: publications on fiber structure and industrial utilization of waste land products
1935

LCIRC 451
10.6028/NBS.LCIRC.451
Download PDF | Download Citation
Letter Circular 452: sound absorption coefficients of the more common materials (superseding Letter Circular 425)
1935

LCIRC 452
10.6028/NBS.LCIRC.452
Download PDF | Download Citation
Letter Circular 453: methods of using standard-frequency radio emissions (replaces Letter Circular 437)
1935

LCIRC 453
10.6028/NBS.LCIRC.453
Download PDF | Download Citation
Letter Circular 454: hues of the spectrum colors
1935

LCIRC 454
10.6028/NBS.LCIRC.454
Download PDF | Download Citation
Letter Circular 455: transparent wrapping materials (replaces Letter Circular 402)
1935

LCIRC 455
10.6028/NBS.LCIRC.455
Download PDF | Download Citation
Letter Circular 456: simplified practice, its purpose and application
1935

LCIRC 456
10.6028/NBS.LCIRC.456
Download PDF | Download Citation
Letter Circular 457: quality of linseed oil for government use
1935

LCIRC 457
10.6028/NBS.LCIRC.457
Download PDF | Download Citation
Letter Circular 458: publications relating to building regulation
1935

LCIRC 458
10.6028/NBS.LCIRC.458
Download PDF | Download Citation
Letter Circular 459: publications covering NBS work on spark plugs
1935

LCIRC 459
10.6028/NBS.LCIRC.459
Download PDF | Download Citation
Letter Circular 397: Can I save gas with a gas-saver?
1934

LCIRC 397
10.6028/NBS.LCIRC.397
Download PDF | Download Citation
Letter Circular 398: publications on colorimetry and spectrophotometry from the National Bureau of Standards (superseding Letter Circular 273)
1934

LCIRC 398
10.6028/NBS.LCIRC.398
Download PDF | Download Citation
Letter Circular 402: cellophane
1934

LCIRC 402
10.6028/NBS.LCIRC.402
Download PDF | Download Citation
Letter Circular 403: detergents and related subjects
1934

LCIRC 403
10.6028/NBS.LCIRC.403
Download PDF | Download Citation
Letter Circular 404: methods of using standard-frequency radio transmissions (replaces Letter Circular 335)
1934

LCIRC 404
10.6028/NBS.LCIRC.404
Download PDF | Download Citation
Letter Circular 405: testing machines for determining the strength and other properties of engineering materials in the laboratories of the National Bureau of Standards, Department of Commerce, Washington, D.C.
1934

LCIRC 405
10.6028/NBS.LCIRC.405
Download PDF | Download Citation
Letter Circular 406: theatre safety curtains (replaces Letter Circular 137)
1934

LCIRC 406
10.6028/NBS.LCIRC.406
Download PDF | Download Citation
Letter Circular 407: automobile engine lubricating oils (supersedes Letter Circular 320)
1934

LCIRC 407r1934
10.6028/NBS.LCIRC.407r1934
Download PDF | Download Citation
Letter Circular 408: automobile engine graphited lubricants (supersedes Letter Circular 387)
1934

LCIRC 408r1934
10.6028/NBS.LCIRC.408r1934
Download PDF | Download Citation
Letter Circular 409: specification for proving rings for calibrating testing machines (superseding Letter Circular 294)
1934

LCIRC 409
10.6028/NBS.LCIRC.409
Download PDF | Download Citation
Letter Circular 410: simplified practice, its purpose and application
1934

LCIRC 410
10.6028/NBS.LCIRC.410
Download PDF | Download Citation
Letter Circular 411: rubber cements
1934

LCIRC 411
10.6028/NBS.LCIRC.411
Download PDF | Download Citation
Letter Circular 412: domestic electric and gas refrigerators (replaces Letter Circular 297)
1934

LCIRC 412
10.6028/NBS.LCIRC.412
Download PDF | Download Citation
Letter Circular 413: aquarium cement
1934

LCIRC 413
10.6028/NBS.LCIRC.413
Download PDF | Download Citation
Letter Circular 414: anti-dimming preparations for glass surfaces (replacing Letter Circular 242)
1934

LCIRC 414
10.6028/NBS.LCIRC.414
Download PDF | Download Citation
Letter Circular 415: electrical interference with radio reception (replaces Letter Circular 182 and 394)
1934

LCIRC 415
10.6028/NBS.LCIRC.415
Download PDF | Download Citation
Letter Circular 416: list of publications of interest to household purchases
1934

LCIRC 416
10.6028/NBS.LCIRC.416
Download PDF | Download Citation
Letter Circular 417: publications on thermal expansion
1934

LCIRC 417
10.6028/NBS.LCIRC.417
Download PDF | Download Citation
Letter Circular 418: standards for checking opacity meters
1934

LCIRC 418
10.6028/NBS.LCIRC.418
Download PDF | Download Citation
Letter Circular 419: information on refrigeration (replaces Letter Circular 30)
1934

LCIRC 419
10.6028/NBS.LCIRC.419
Download PDF | Download Citation
Letter Circular 420: solid carbon dioxide
1934

LCIRC 420r1934
10.6028/NBS.LCIRC.420r1934
Download PDF | Download Citation
Letter Circular 421: thermal insulation
1934

LCIRC 421
10.6028/NBS.LCIRC.421
Download PDF | Download Citation
Letter Circular 422: the painting of structural metal (steel, galvanized metal, tin plate and copper)
1934
Percy H Walker, EF Hickson
LCIRC 422
10.6028/NBS.LCIRC.422
Download PDF | Download Citation
Letter Circular 423: matches
1934

LCIRC 423
10.6028/NBS.LCIRC.423
Download PDF | Download Citation
Letter Circular 424: carbon paper and typewriter ribbons
1934

LCIRC 424
10.6028/NBS.LCIRC.424
Download PDF | Download Citation
Letter Circular 425: sound absorption coefficients of the more common materials (superseding Letter Circular 359)
1934

LCIRC 425
10.6028/NBS.LCIRC.425
Download PDF | Download Citation
Letter Circular 426: publications on the platinum metals
1934

LCIRC 426
10.6028/NBS.LCIRC.426
Download PDF | Download Citation
Letter Circular 427: losses of gasoline in storage and handling
1934

LCIRC 427
10.6028/NBS.LCIRC.427
Download PDF | Download Citation
Letter Circular 428: house plan services
1934

LCIRC 428
10.6028/NBS.LCIRC.428
Download PDF | Download Citation
Letter Circular 429: information on ultraviolet transparency of window materials and fabrics (supersedes Letter Circular 235 and Form Letter PC 113)
1934

LCIRC 429
10.6028/NBS.LCIRC.429
Download PDF | Download Citation
Letter Circular 430: magnetic insulators
1934

LCIRC 430
10.6028/NBS.LCIRC.430
Download PDF | Download Citation
Letter Circular 431: railway track scale testing service of the National Bureau of Standards fiscal year July 1, 1933 to June 30, 1934
1934

LCIRC 431
10.6028/NBS.LCIRC.431
Download PDF | Download Citation
Letter Circular 432: publications relating to building codes and construction practices, home building and maintenance -- home ownership
1934

LCIRC 432
10.6028/NBS.LCIRC.432
Download PDF | Download Citation
Letter Circular 351: color and legibility
1933

LCIRC 351
10.6028/NBS.LCIRC.351
Download PDF | Download Citation
Letter Circular 352: color of illuminant and efficiency of the worker
1933

LCIRC 352
10.6028/NBS.LCIRC.352
Download PDF | Download Citation
Letter Circular 353: railroad track scale testing service of the National Bureau of Standards fiscal year July 1, 1931 to June 30, 1932
1933

LCIRC 353
10.6028/NBS.LCIRC.353
Download PDF | Download Citation
Letter Circular 354: list of available commercial standards
1933

LCIRC 354r1933
10.6028/NBS.LCIRC.354r1933
Download PDF | Download Citation
Letter Circular 355: key to minimum requirements recommended by the Department of Commerce Building Code Committee
1933

LCIRC 355
10.6028/NBS.LCIRC.355
Download PDF | Download Citation
Letter Circular 356: color harmony
1933

LCIRC 356
10.6028/NBS.LCIRC.356
Download PDF | Download Citation
Letter Circular 357: real estate appraisal practices
1933

LCIRC 357
10.6028/NBS.LCIRC.357
Download PDF | Download Citation
Letter Circular 358: color charts
1933

LCIRC 358
10.6028/NBS.LCIRC.358
Download PDF | Download Citation
Letter Circular 359: sound absorption coefficients of the more common materials (superseding Letter Circular 344)
1933

LCIRC 359
10.6028/NBS.LCIRC.359
Download PDF | Download Citation
Letter Circular 360: rerefining used crankcase oil
1933

LCIRC 360
10.6028/NBS.LCIRC.360
Download PDF | Download Citation
Letter Circular 361: typical home modernizing and community improvement campaigns
1933

LCIRC 361
10.6028/NBS.LCIRC.361
Download PDF | Download Citation
Letter Circular 362: comparisons of residential vacancy survey reports in 46 towns and cities
1933

LCIRC 362
10.6028/NBS.LCIRC.362
Download PDF | Download Citation
Letter Circular 363: the properties and testing of foundry sands
1933

LCIRC 363
10.6028/NBS.LCIRC.363
Download PDF | Download Citation
Letter Circular 364: publications relating to electrical measuring instruments, meters and their accessories (superseding Letter Circular 233)
1933

LCIRC 364
10.6028/NBS.LCIRC.364
Download PDF | Download Citation
Letter Circular 365: summary of estimated expenditures for labor and materials reported by local modernizing campaign committees from Jan. 1, 1932 to April 1, 1933
1933

LCIRC 365
10.6028/NBS.LCIRC.365
Download PDF | Download Citation
Letter Circular 366: bringing homes up to date through community home improvement campaigns in rural districts and smaller towns
1933

LCIRC 366
10.6028/NBS.LCIRC.366
Download PDF | Download Citation
Letter Circular 367: tabulation of reports from cities conducting home modernizing campaigns in 1932
1933

LCIRC 367
10.6028/NBS.LCIRC.367
Download PDF | Download Citation
Letter Circular 368: routine testing of lubricants and liquid fuels
1933

LCIRC 368
10.6028/NBS.LCIRC.368
Download PDF | Download Citation
Letter Circular 369: survey of city planning and related laws in 1932
1933
Lester G Chase
LCIRC 369
10.6028/NBS.LCIRC.369
Download PDF | Download Citation
Letter Circular 370: regional planning commissions or organizations in the United States
1933
Lester G Chase
LCIRC 370
10.6028/NBS.LCIRC.370
Download PDF | Download Citation
Letter Circular 371: city planning commissions in the United States
1933
Lester G Chase
LCIRC 371
10.6028/NBS.LCIRC.371
Download PDF | Download Citation
Letter Circular 372: the use of flexible steel gages in gaging the mesh of gill nets
1933

LCIRC 372
10.6028/NBS.LCIRC.372
Download PDF | Download Citation
Letter Circular 373: list of pamphlets dealing with community home improvement and repair work activities, and other material of inters to home owners
1933

LCIRC 373r1933
10.6028/NBS.LCIRC.373r1933
Download PDF | Download Citation
Letter Circular 374: zoned municipalities in the United States
1933
Normal L Knauss
LCIRC 374
10.6028/NBS.LCIRC.374
Download PDF | Download Citation
Letter Circular 375: survey of zoning laws and ordinances adopted during 1932
1933
Normal L Knauss
LCIRC 375
10.6028/NBS.LCIRC.375
Download PDF | Download Citation
Letter Circular 376: metric and English distance equivalents for athletic events (track and field)
1933

LCIRC 376
10.6028/NBS.LCIRC.376
Download PDF | Download Citation
Letter Circular 377: status of municipal building codes
1933

LCIRC 377
10.6028/NBS.LCIRC.377
Download PDF | Download Citation
Letter Circular 378a: zoned municipalities -- by population groups; municipalities having over 100,000 population
1933

LCIRC 378a
10.6028/NBS.LCIRC.378a
Download PDF | Download Citation
Letter Circular 378b: zoned municipalities -- by population groups; municipalities of more than 40,000 and less than 100,000 population
1933

LCIRC 378b
10.6028/NBS.LCIRC.378b
Download PDF | Download Citation
Letter Circular 378c: zoned municipalities -- by population groups; municipalities of more than 20,00 and less than 40,000 population
1933

LCIRC 378c
10.6028/NBS.LCIRC.378c
Download PDF | Download Citation
Letter Circular 378d: zoned municipalities -- by population groups; municipalities of more than 10,000 and less than 20,000 population
1933

LCIRC 378d
10.6028/NBS.LCIRC.378d
Download PDF | Download Citation
Letter Circular 378e: zoned municipalities -- by population groups; municipalities of more than 5,000 and less than 10,000 population
1933

LCIRC 378e
10.6028/NBS.LCIRC.378e
Download PDF | Download Citation
Letter Circular 378f: zone municipalities -- by population groups; municipalities of more than 3,000 and less than 5,000 population
1933

LCIRC 378f
10.6028/NBS.LCIRC.378f
Download PDF | Download Citation
Letter Circular 378g: municipalities -- by population groups; municipalities of more than 1,000 and less than 3,000 population
1933

LCIRC 378g
10.6028/NBS.LCIRC.378g
Download PDF | Download Citation
Letter Circular 378h: municipalities -- by population groups; municipalities having less than 1,000 population
1933

LCIRC 378h
10.6028/NBS.LCIRC.378h
Download PDF | Download Citation
Letter Circular 379: operating manual for conducting a local modernizing campaign
1933

LCIRC 379
10.6028/NBS.LCIRC.379
Download PDF | Download Citation
Letter Circular 380: acoustical publications by members of the staff of the Bureau of Standards
1933

LCIRC 380
10.6028/NBS.LCIRC.380
Download PDF | Download Citation
Letter Circular 381: suggested information on reconditioning home interiors - furniture and built-in equipment
1933

LCIRC 381
10.6028/NBS.LCIRC.381
Download PDF | Download Citation
Letter Circular 382: comparisons of residential vacancy survey reports in 51 towns and cities
1933

LCIRC 382
10.6028/NBS.LCIRC.382
Download PDF | Download Citation
Letter Circular 383: practical reasons for modernizing old homes
1933

LCIRC 383
10.6028/NBS.LCIRC.383
Download PDF | Download Citation
Letter Circular 384: publications relating to electric batteries (superseding Letter Circular 162)
1933

LCIRC 384
10.6028/NBS.LCIRC.384
Download PDF | Download Citation
Letter Circular 386: suggested specification for cold water paint, casein type
1933

LCIRC 386
10.6028/NBS.LCIRC.386
Download PDF | Download Citation
Letter Circular 387: graphited lubricants
1933

LCIRC 387
10.6028/NBS.LCIRC.387
Download PDF | Download Citation
Letter Circular 388: the care of floors
1933

LCIRC 388
10.6028/NBS.LCIRC.388
Download PDF | Download Citation
Letter Circular 389: publications of the Bureau of Standards on X-rays
1933

LCIRC 389
10.6028/NBS.LCIRC.389
Download PDF | Download Citation
Letter Circular 390: list of weights and measures offices of the States and District of Columbia
1933

LCIRC 390
10.6028/NBS.LCIRC.390
Download PDF | Download Citation
Letter Circular 391: damp masonry walls above grade
1933

LCIRC 391
10.6028/NBS.LCIRC.391
Download PDF | Download Citation
Letter Circular 392: publications relating to dyes
1933

LCIRC 392
10.6028/NBS.LCIRC.392
Download PDF | Download Citation
Letter Circular 393: procedure for the measurement of the reflectance of manila rope fiber for light of wave length 500 millimicrons
1933
Genevieve Becker
LCIRC 393
10.6028/NBS.LCIRC.393
Download PDF | Download Citation
Letter Circular 394: electrical interference with radio reception (replaces Letter Circular 182)
1933

LCIRC 394
10.6028/NBS.LCIRC.394
Download PDF | Download Citation
Letter Circular 395: preparation and colorimetric properties of a magnesium-oxide reflectance standard
1933

LCIRC 395
10.6028/NBS.LCIRC.395
Download PDF | Download Citation
Letter Circular 396: publications relating to textiles (superseding Letter Circular 143)
1933

LCIRC 396
10.6028/NBS.LCIRC.396
Download PDF | Download Citation
Letter Circular 399: weights and measures publications of general interest (replaces Letter Circular 243)
1933

LCIRC 399
10.6028/NBS.LCIRC.399
Download PDF | Download Citation
Letter Circular 400: sources of radio information (replaces Letter Circular 274)
1933

LCIRC 400
10.6028/NBS.LCIRC.400
Download PDF | Download Citation
Letter Circular 401: railway track scale testing service of the National Bureau of Standards fiscal year July 1, 1932 to June 30, 1933
1933

LCIRC 401
10.6028/NBS.LCIRC.401
Download PDF | Download Citation
Letter Circular 315: railroad track scale testing service of the National Bureau of Standards fiscal year July 1, 1930 to June 30, 1931
1932

LCIRC 315
10.6028/NBS.LCIRC.315
Download PDF | Download Citation
Letter Circular 316: publications of the engineering mechanics section Bureau of Standards, Department of Commerce, Washington (revision of Letter Circular 166)
1932

LCIRC 316
10.6028/NBS.LCIRC.316
Download PDF | Download Citation
Letter Circular 317: distance ranges of radio waves
1932

LCIRC 317
10.6028/NBS.LCIRC.317
Download PDF | Download Citation
Letter Circular 318: practical modernizing of homes benefits the family and increases property values
1932

LCIRC 318
10.6028/NBS.LCIRC.318
Download PDF | Download Citation
Letter Circular 319: publications relating to photography
1932

LCIRC 319
10.6028/NBS.LCIRC.319
Download PDF | Download Citation
Letter Circular 320: automobile engine lubricating oils (supersedes Letter Circular 298)
1932

LCIRC 320r1932
10.6028/NBS.LCIRC.320r1932
Download PDF | Download Citation
Letter Circular 321: rubber latex
1932

LCIRC 321
10.6028/NBS.LCIRC.321
Download PDF | Download Citation
Letter Circular 322: list of publications of interest to household purchasers
1932

LCIRC 322
10.6028/NBS.LCIRC.322
Download PDF | Download Citation
Letter Circular 323: standards and specifications for building materials
1932

LCIRC 323
10.6028/NBS.LCIRC.323
Download PDF | Download Citation
Letter Circular 324: brake testing devices (superseding Letter Circular 245)
1932

LCIRC 324r1932
10.6028/NBS.LCIRC.324r1932
Download PDF | Download Citation
Letter Circular 325: aeronautical publications by members of the staff of the Bureau of Standards (superseding Letter Circular 285)
1932

LCIRC 325
10.6028/NBS.LCIRC.325
Download PDF | Download Citation
Letter Circular 326: sound absorption coefficients of the more common materials (superseding Letter Circular 308)
1932

LCIRC 326
10.6028/NBS.LCIRC.326
Download PDF | Download Citation
Letter Circular 327: cellophane
1932

LCIRC 327
10.6028/NBS.LCIRC.327
Download PDF | Download Citation
Letter Circular 328: soil corrosion of underground piping systems
1932

LCIRC 328
10.6028/NBS.LCIRC.328
Download PDF | Download Citation
Letter Circular 329: determination of the corrosively of soils
1932

LCIRC 329
10.6028/NBS.LCIRC.329
Download PDF | Download Citation
Letter Circular 330: protective coatings for underground piping systems
1932

LCIRC 330
10.6028/NBS.LCIRC.330
Download PDF | Download Citation
Letter Circular 331: inks (superseding Letter Circular 95)
1932

LCIRC 331
10.6028/NBS.LCIRC.331
Download PDF | Download Citation
Letter Circular 332: publications relating to photography
1932

LCIRC 332
10.6028/NBS.LCIRC.332
Download PDF | Download Citation
Letter Circular 333: outside house painting
1932

LCIRC 333
10.6028/NBS.LCIRC.333
Download PDF | Download Citation
Letter Circular 334: spray painting
1932

LCIRC 334
10.6028/NBS.LCIRC.334
Download PDF | Download Citation
Letter Circular 335: uses of transmissions of standard radio frequencies (replacing Letter Circular 171, 280, & 314)
1932

LCIRC 335
10.6028/NBS.LCIRC.335
Download PDF | Download Citation
Letter Circular 336: luminous paints
1932

LCIRC 336
10.6028/NBS.LCIRC.336
Download PDF | Download Citation
Letter Circular 337: painting water tanks
1932

LCIRC 337
10.6028/NBS.LCIRC.337
Download PDF | Download Citation
Letter Circular 338: detergents and certain detergent aids
1932

LCIRC 338
10.6028/NBS.LCIRC.338
Download PDF | Download Citation
Letter Circular 339: floor oils
1932

LCIRC 339
10.6028/NBS.LCIRC.339
Download PDF | Download Citation
Letter Circular 340: sweeping compounds (also known as floor sweep and dust down)
1932

LCIRC 340
10.6028/NBS.LCIRC.340
Download PDF | Download Citation
Letter Circular 341: drainpipe cleaners or solvents
1932

LCIRC 341
10.6028/NBS.LCIRC.341
Download PDF | Download Citation
Letter Circular 342: testing of electrical instruments, meters, and instrument transformers (revision of Letter Circular 222)
1932

LCIRC 342r1932
10.6028/NBS.LCIRC.342r1932
Download PDF | Download Citation
Letter Circular 343: solders and soldering
1932

LCIRC 343
10.6028/NBS.LCIRC.343
Download PDF | Download Citation
Letter Circular 344: sound absorption coefficients of the more common materials (superseding Letter Circular 326)
1932

LCIRC 344
10.6028/NBS.LCIRC.344
Download PDF | Download Citation
Letter Circular 345: index of simplified practice recommendations
1932

LCIRC 345
10.6028/NBS.LCIRC.345
Download PDF | Download Citation
Letter Circular 346: list of simplified practice recommendations proposed, approved and accepted by industrial groups, under the auspices of the Bureau of Standards, U. S. Department of Commerce
1932

LCIRC 346
10.6028/NBS.LCIRC.346
Download PDF | Download Citation
Letter Circular 347: sundials
1932
RE Gould
LCIRC 347
10.6028/NBS.LCIRC.347
Download PDF | Download Citation
Letter Circular 348: publications and mailing matter of the division of building and housing
1932

LCIRC 348
10.6028/NBS.LCIRC.348
Download PDF | Download Citation
Letter Circular 349: modifications in recommended building code requirements for working stresses in building materials
1932

LCIRC 349
10.6028/NBS.LCIRC.349
Download PDF | Download Citation
Letter Circular 350: publications on glass technology and standard samples of interest to the glass industry
1932

LCIRC 350
10.6028/NBS.LCIRC.350
Download PDF | Download Citation
Letter Circular 295: railroad track scale testing service of the National Bureau of Standards fiscal year July 1, 1929 to June 30, 1930
1931

LCIRC 295
10.6028/NBS.LCIRC.295
Download PDF | Download Citation
Letter Circular 296: tests of magnetic materials
1931

LCIRC 296
10.6028/NBS.LCIRC.296
Download PDF | Download Citation
Letter Circular 297: electric and gas refrigerators (replaces Letter Circular 255)
1931

LCIRC 297
10.6028/NBS.LCIRC.297
Download PDF | Download Citation
Letter Circular 298: automobile engine lubricating oils
1931

LCIRC 298
10.6028/NBS.LCIRC.298
Download PDF | Download Citation
Letter Circular 299: design of gas burners or domestic use
1931

LCIRC 299
10.6028/NBS.LCIRC.299
Download PDF | Download Citation
Letter Circular 300: aquarium cement
1931

LCIRC 300
10.6028/NBS.LCIRC.300
Download PDF | Download Citation
Letter Circular 301: traffic paint
1931

LCIRC 301
10.6028/NBS.LCIRC.301
Download PDF | Download Citation
Letter Circular 302: battery compounds and solutions
1931

LCIRC 302
10.6028/NBS.LCIRC.302
Download PDF | Download Citation
Letter Circular 303: sound absorption coefficients of the more common materials
1931

LCIRC 303
10.6028/NBS.LCIRC.303
Download PDF | Download Citation
Letter Circular 304: painting plaster
1931

LCIRC 304
10.6028/NBS.LCIRC.304
Download PDF | Download Citation
Letter Circular 305:a guide to the literature on rubber 
1931

LCIRC 305
10.6028/NBS.LCIRC.305
Download PDF | Download Citation
Letter Circular 306: building code and plumbing code tabulation
1931

LCIRC 306
10.6028/NBS.LCIRC.306
Download PDF | Download Citation
Letter Circular 307: specifications for haemacytometer chambers (superseding Letter Circular 240)
1931

LCIRC 307
10.6028/NBS.LCIRC.307
Download PDF | Download Citation
Letter Circular 308: sound absorption coefficients of the more common materials (superseding Letter Circular 303)
1931

LCIRC 308
10.6028/NBS.LCIRC.308
Download PDF | Download Citation
Letter Circular 309: specifications for the repair of scales of large capacity
1931

LCIRC 309
10.6028/NBS.LCIRC.309
Download PDF | Download Citation
Letter Circular 310: specifications, standardization, and the use of steel tapes
1931

LCIRC 310
10.6028/NBS.LCIRC.310
Download PDF | Download Citation
Letter Circular 311: the development of standard sieve specifications in the United States
1931

LCIRC 311
10.6028/NBS.LCIRC.311
Download PDF | Download Citation
Letter Circular 312: supplementary tests of gypsum as fire protection for building columns
1931

LCIRC 312
10.6028/NBS.LCIRC.312
Download PDF | Download Citation
Letter Circular 313: monographic chart for use with steel measuring tapes
1931

LCIRC 313
10.6028/NBS.LCIRC.313
Download PDF | Download Citation
Letter Circular 314: use of standard frequency transmissions in checking standard oscillators (replacing Letter Circulars 171 & 280)
1931

LCIRC 314
10.6028/NBS.LCIRC.314
Download PDF | Download Citation
Letter Circular 199: selenium cells; photoelectric cells; thermopiles
1930

LCIRC 199r1930
10.6028/NBS.LCIRC.199r1930
Download PDF | Download Citation
Letter Circular 256A: sources of supply of commodities covered by federal specifications
1930

LCIRC 256Ar1930
10.6028/NBS.LCIRC.256Ar1930
Download PDF | Download Citation
Letter Circular 277: sources of supply of commodities covered by commercial standards
1930

LCIRC 277
10.6028/NBS.LCIRC.277
Download PDF | Download Citation
Letter Circular 278: sound absorption coefficients for some of the more common materials
1930

LCIRC 278
10.6028/NBS.LCIRC.278
Download PDF | Download Citation
Letter Circular 279: use of the piezo oscillator in radio broadcasting stations
1930

LCIRC 279
10.6028/NBS.LCIRC.279
Download PDF | Download Citation
Letter Circular 280: measurement of the frequency of distant radio transmitting stations (replacing Letter Circular 171)
1930

LCIRC 280
10.6028/NBS.LCIRC.280
Download PDF | Download Citation
Letter Circular 281: good gasoline
1930

LCIRC 281
10.6028/NBS.LCIRC.281
Download PDF | Download Citation
Letter Circular 282: thermal insulation
1930

LCIRC 282
10.6028/NBS.LCIRC.282
Download PDF | Download Citation
Letter Circular 283: publications of the department of commerce Bureau of Standards optical instruments section dealing with optical instruments, refractometry and optical glass
1930

LCIRC 283
10.6028/NBS.LCIRC.283
Download PDF | Download Citation
Letter Circular 284: list of publications and articles relating to home heating problem
1930

LCIRC 284
10.6028/NBS.LCIRC.284
Download PDF | Download Citation
Letter Circular 285: aeronautical publications by members of the staff of the Bureau of Standards
1930

LCIRC 285
10.6028/NBS.LCIRC.285
Download PDF | Download Citation
Letter Circular 286: solid carbon dioxide
1930

LCIRC 286
10.6028/NBS.LCIRC.286
Download PDF | Download Citation
Letter Circular 287: list of published material relating to home building and maintenance
1930

LCIRC 287
10.6028/NBS.LCIRC.287
Download PDF | Download Citation
Letter Circular 288: painting plaster
1930

LCIRC 288
10.6028/NBS.LCIRC.288
Download PDF | Download Citation
Letter Circular 289: a convenient mixture for testing the operating efficiency of a distilling column (A.P.I. project 6)
1930

LCIRC 289
10.6028/NBS.LCIRC.289
Download PDF | Download Citation
Letter Circular 290: publications of the Bureau of Standards relating to building materials, home building, home ownership, city planning, and zoning
1930

LCIRC 290
10.6028/NBS.LCIRC.290
Download PDF | Download Citation
Letter Circular 291: Bureau of Standards publications on paint, varnish, and bituminous materials
1930

LCIRC 291
10.6028/NBS.LCIRC.291
Download PDF | Download Citation
Letter Circular 292: liquefied petroleum (bottled) gases
1930

LCIRC 292
10.6028/NBS.LCIRC.292
Download PDF | Download Citation
Letter Circular 293: sound absorption coefficients of the more common materials
1930

LCIRC 293
10.6028/NBS.LCIRC.293
Download PDF | Download Citation
Letter Circular 294: specifications for proving rings for calibrating testing machines
1930

LCIRC 294
10.6028/NBS.LCIRC.294
Download PDF | Download Citation
Letter Circular 191: list of materials testing laboratories
1929

LCIRC 191r1929
10.6028/NBS.LCIRC.191r1929
Download PDF | Download Citation
Letter Circular 255: electric and gas refrigerators
1929

LCIRC 255
10.6028/NBS.LCIRC.255
Download PDF | Download Citation
Letter Circular 256: sources of supply of commodities covered by United States government specifications
1929

LCIRC 256
10.6028/NBS.LCIRC.256
Download PDF | Download Citation
Letter Circular 257: sources of information on the properties of metals and alloys (books)
1929

LCIRC 257
10.6028/NBS.LCIRC.257
Download PDF | Download Citation
Letter Circular 258: testing of piezo oscillators for broadcasting stations
1929

LCIRC 258
10.6028/NBS.LCIRC.258
Download PDF | Download Citation
Letter Circular 260: soundproofing of airplane cabins
1929

LCIRC 260
10.6028/NBS.LCIRC.260
Download PDF | Download Citation
Letter Circular 261: application of the National Electric Safety Code
1929

LCIRC 261
10.6028/NBS.LCIRC.261
Download PDF | Download Citation
Letter Circular 263: painting of steam and hot water radiators
1929

LCIRC 263r1929
10.6028/NBS.LCIRC.263r1929
Download PDF | Download Citation
Letter Circular 264: specifications for proving rings for calibrating testing machines
1929

LCIRC 264
10.6028/NBS.LCIRC.264
Download PDF | Download Citation
Letter Circular 265: sundials
1929

LCIRC 265
10.6028/NBS.LCIRC.265
Download PDF | Download Citation
Letter Circular 266: specifications for portable testing machine for making transverse tests of building bricks
1929

LCIRC 266
10.6028/NBS.LCIRC.266
Download PDF | Download Citation
Letter Circular 267: pneumatic tire equipment
1929

LCIRC 267
10.6028/NBS.LCIRC.267
Download PDF | Download Citation
Letter Circular 268: nomenclature of the alloys brass, bronze and so-called government bronze
1929

LCIRC 268
10.6028/NBS.LCIRC.268
Download PDF | Download Citation
Letter Circular 269: selected bibliography on neon and its uses in sign lighting, aviation, and miscellaneous applications
1929

LCIRC 269
10.6028/NBS.LCIRC.269
Download PDF | Download Citation
Letter Circular 270: rubber floor tile
1929

LCIRC 270
10.6028/NBS.LCIRC.270
Download PDF | Download Citation
Letter Circular 271: publications relating to friction and lubrication
1929

LCIRC 271
10.6028/NBS.LCIRC.271
Download PDF | Download Citation
Letter Circular 272: publication of the polarimetry section Bureau of Standards
1929

LCIRC 272
10.6028/NBS.LCIRC.272
Download PDF | Download Citation
Letter Circular 274:sources of radio information 
1929

LCIRC 274
10.6028/NBS.LCIRC.274
Download PDF | Download Citation
Letter Circular 275: polishes
1929

LCIRC 275
10.6028/NBS.LCIRC.275
Download PDF | Download Citation
Letter Circular 276: railroad track scale testing service of the U.S. Bureau of Standards during the fiscal year July 1, 1928 to June 30, 1929
1929

LCIRC 276
10.6028/NBS.LCIRC.276
Download PDF | Download Citation
Letter Circular 118 supplement: metallurgical publications
1928

LCIRC 118sup1928
10.6028/NBS.LCIRC.118sup1928
Download PDF | Download Citation
Letter Circular 144: publications relating to lime
1928

LCIRC 144r1928
10.6028/NBS.LCIRC.144r1928
Download PDF | Download Citation
Letter Circular 145: publications relating to gypsum
1928

LCIRC 145r1928
10.6028/NBS.LCIRC.145r1928
Download PDF | Download Citation
Letter Circular 146: publications relating to sand-lime brick
1928

LCIRC 146r1928
10.6028/NBS.LCIRC.146r1928
Download PDF | Download Citation
Letter Circular 152: specifications for the manufacture and installation of motor truck, built-in, self-contained, and portable scales for railroad services
1928

LCIRC 152r1928
10.6028/NBS.LCIRC.152r1928
Download PDF | Download Citation
Letter Circular 166: publications of the engineering mechanics section Bureau of Standards, Department of Commerce, Washington
1928

LCIRC 166r1928
10.6028/NBS.LCIRC.166r1928
Download PDF | Download Citation
Letter Circular 185: specifications for portable frequency meter for frequencies from 1500 to 15000 kilocycles, Bureau of Standards type K
1928

LCIRC 185r1928
10.6028/NBS.LCIRC.185r1928
Download PDF | Download Citation
Letter Circular 222: testing of electrical instruments, meters, and instrument transformers
1928

LCIRC 222
10.6028/NBS.LCIRC.222
Download PDF | Download Citation
Letter Circular 235: the ultra-violet transmission of various new glasses and window glass substitutes as compared with that of common window glass
1928

LCIRC 235r1928
10.6028/NBS.LCIRC.235r1928
Download PDF | Download Citation
Letter Circular 240: specifications for hemocytometer chambers
1928

LCIRC 240
10.6028/NBS.LCIRC.240
Download PDF | Download Citation
Letter Circular 241: effect of sulphur and phosphorus on iron and steel
1928

LCIRC 241r1928
10.6028/NBS.LCIRC.241r1928
Download PDF | Download Citation
Letter Circular 242: anti-dimming preparations for glass surfaces
1928

LCIRC 242
10.6028/NBS.LCIRC.242
Download PDF | Download Citation
Letter Circular 243: weights and measures publications
1928

LCIRC 243
10.6028/NBS.LCIRC.243
Download PDF | Download Citation
Letter Circular 244: use of the piezo oscillator in radio broadcasting stations
1928

LCIRC 244
10.6028/NBS.LCIRC.244
Download PDF | Download Citation
Letter Circular 245: proposed final draft for safety code for brakes and brake testing
1928

LCIRC 245
10.6028/NBS.LCIRC.245
Download PDF | Download Citation
Letter Circular 246: specifications for portable piezo oscillator, Bureau of Standards, type N
1928

LCIRC 246
10.6028/NBS.LCIRC.246
Download PDF | Download Citation
Letter Circular 247: detergents (soaps, polishes, etc.)
1928

LCIRC 247
10.6028/NBS.LCIRC.247
Download PDF | Download Citation
Letter Circular 248: sintering test of molding sand
1928

LCIRC 248
10.6028/NBS.LCIRC.248
Download PDF | Download Citation
Letter Circular 249: materials for filling etched lines on thermometers
1928

LCIRC 249
10.6028/NBS.LCIRC.249
Download PDF | Download Citation
Letter Circular 250: specification for proving rings for calibrating testing machines
1928

LCIRC 250
10.6028/NBS.LCIRC.250
Download PDF | Download Citation
Letter Circular 251: having standard weights tested by the Bureau of Standards
1928

LCIRC 251
10.6028/NBS.LCIRC.251
Download PDF | Download Citation
Letter Circular 252: rubber binders for foundry cores
1928

LCIRC 252
10.6028/NBS.LCIRC.252
Download PDF | Download Citation
Letter Circular 253: corrosion resistance of bare and zinc-coated iron and steel
1928

LCIRC 253
10.6028/NBS.LCIRC.253
Download PDF | Download Citation
Letter Circular 254: the treatment of water for boiler use
1928

LCIRC 254
10.6028/NBS.LCIRC.254
Download PDF | Download Citation
Letter Circular 259: railroad track scale testing service of the U.S. Bureau of Standards during the fiscal year July 1, 1927 to June 30, 1928
1928

LCIRC 259
10.6028/NBS.LCIRC.259
Download PDF | Download Citation
Letter Circular 262: tentative specification for traffic white paint (semipaste and ready-mixed)
1928

LCIRC 262
10.6028/NBS.LCIRC.262
Download PDF | Download Citation
Letter Circular 32: methods of silvering glass
1928

LCIRC 32r1928
10.6028/NBS.LCIRC.32r1928
Download PDF | Download Citation
Letter Circular 40: radio publications of the Bureau of Standards
1928

LCIRC 40r1928
10.6028/NBS.LCIRC.40r1928
Download PDF | Download Citation
Letter Circular 131: publications by the Bureau of Standards relating to ceramics
1927

LCIRC 131r1927
10.6028/NBS.LCIRC.131r1927
Download PDF | Download Citation
Letter Circular 138: publications relating to building materials, construction, and building codes
1927

LCIRC 138r1927
10.6028/NBS.LCIRC.138r1927
Download PDF | Download Citation
Letter Circular 144: publications relating to lime
1927

LCIRC 144r1927
10.6028/NBS.LCIRC.144r1927
Download PDF | Download Citation
Letter Circular 145: publications relating to gypsum
1927

LCIRC 145r1927
10.6028/NBS.LCIRC.145r1927
Download PDF | Download Citation
Letter Circular 146: publications relating to sand-lime brick
1927

LCIRC 146r1927
10.6028/NBS.LCIRC.146r1927
Download PDF | Download Citation
Letter Circular 154: supplement to list of letter circulars
1927

LCIRC 154r1927
10.6028/NBS.LCIRC.154r1927
Download PDF | Download Citation
Letter Circular 155: publications by the Bureau of Standards on cement, concrete, reinforced concrete, stucco, magnesite, building stone and related subjects
1927

LCIRC 155r1927
10.6028/NBS.LCIRC.155r1927
Download PDF | Download Citation
Letter Circular 168: addresses of sources of publications issued by the lime, gypsum and sand-lime brick section
1927

LCIRC 168r1927
10.6028/NBS.LCIRC.168r1927
Download PDF | Download Citation
Letter Circular 219: tests of magnetic materials
1927

LCIRC 219
10.6028/NBS.LCIRC.219
Download PDF | Download Citation
Letter Circular 220: incandescent electric lamps as photometric standards
1927

LCIRC 220
10.6028/NBS.LCIRC.220
Download PDF | Download Citation
Letter Circular 221: tests of resistance apparatus
1927

LCIRC 221
10.6028/NBS.LCIRC.221
Download PDF | Download Citation
Letter Circular 223: use of the piezo oscillator in radio broadcasting stations
1927

LCIRC 223
10.6028/NBS.LCIRC.223
Download PDF | Download Citation
Letter Circular 224: formulas and tables for the calculation of antenna capacity
1927

LCIRC 224
10.6028/NBS.LCIRC.224
Download PDF | Download Citation
Letter Circular 225: some outstanding accomplishments of the Bureau of Standards in 1926
1927

LCIRC 225
10.6028/NBS.LCIRC.225
Download PDF | Download Citation
Letter Circular 226: the design of an exponential acoustic horn
1927

LCIRC 226
10.6028/NBS.LCIRC.226
Download PDF | Download Citation
Letter Circular 227: thermal insulation
1927

LCIRC 227
10.6028/NBS.LCIRC.227
Download PDF | Download Citation
Letter Circular 228: the fire resistance of brick walls bricks made of clay or shale
1927

LCIRC 228
10.6028/NBS.LCIRC.228
Download PDF | Download Citation
Letter Circular 229: the fire resistance of brick walls made of concrete or sand-lime bricks
1927

LCIRC 229
10.6028/NBS.LCIRC.229
Download PDF | Download Citation
Letter Circular 230: glycerin or ethylene glycol in foundry sand mold facing mixtures
1927

LCIRC 230
10.6028/NBS.LCIRC.230
Download PDF | Download Citation
Letter Circular 232: the determination of sulphur in petroleum oils
1927

LCIRC 232
10.6028/NBS.LCIRC.232
Download PDF | Download Citation
Letter Circular 233: publications relating to electrical measuring instruments, meters and their accessories
1927

LCIRC 233
10.6028/NBS.LCIRC.233
Download PDF | Download Citation
Letter Circular 234: testing laboratories equipped for thermal expansion tests of solids
1927

LCIRC 234
10.6028/NBS.LCIRC.234
Download PDF | Download Citation
Letter Circular 235: the ultraviolet spectral transmission of various new glasses and window glass substitutes, used in therapy
1927

LCIRC 235
10.6028/NBS.LCIRC.235
Download PDF | Download Citation
Letter Circular 235: the ultraviolet spectral transmission of various new glasses and window glass substitutes, used in therapy
1927

LCIRC 235r1927
10.6028/NBS.LCIRC.235r1927
Download PDF | Download Citation
Letter Circular 236: readjusting screw-knob weights class s
1927

LCIRC 236
10.6028/NBS.LCIRC.236
Download PDF | Download Citation
Letter Circular 237: railroad track scale testing service of the U.S. Bureau of Standards during the fiscal year July 1, 1926 to June 30, 1927
1927

LCIRC 237
10.6028/NBS.LCIRC.237
Download PDF | Download Citation
Letter Circular 238: Martens' extensometer with Tuckerman optical lever system for high temperature tension tests
1927

LCIRC 238
10.6028/NBS.LCIRC.238
Download PDF | Download Citation
Letter Circular 239: list of publications giving data on dental research
1927

LCIRC 239
10.6028/NBS.LCIRC.239
Download PDF | Download Citation
Letter Circular 59: paints, varnish, etc
1927

LCIRC 59r1927
10.6028/NBS.LCIRC.59r1927
Download PDF | Download Citation
Letter Circular 10: list of communications of the gage section
1926

LCIRC 10r1926
10.6028/NBS.LCIRC.10r1926
Download PDF | Download Citation
Letter Circular 113: fire resistance of clay hollow wall tile
1926

LCIRC 113r1926
10.6028/NBS.LCIRC.113r1926
Download PDF | Download Citation
Letter Circular 118 supplement: metallurgical publications
1926

LCIRC 118sup12/1926
10.6028/NBS.LCIRC.118sup12/1926
Download PDF | Download Citation
Letter Circular 118 supplement 
1926

LCIRC 118sup3/1926
10.6028/NBS.LCIRC.118sup3/1926
Download PDF | Download Citation
Letter Circular 138: publications relating to building materials, construction, and building codes
1926

LCIRC 138r1926
10.6028/NBS.LCIRC.138r1926
Download PDF | Download Citation
Letter Circular 143: textiles
1926

LCIRC 143r1926
10.6028/NBS.LCIRC.143r1926
Download PDF | Download Citation
Letter Circular 144: publications relating to lime
1926

LCIRC 144r1926
10.6028/NBS.LCIRC.144r1926
Download PDF | Download Citation
Letter Circular 145: publications relating to gypsum
1926

LCIRC 145r1926
10.6028/NBS.LCIRC.145r1926
Download PDF | Download Citation
Letter Circular 146: publications relating to sand-lime brick
1926

LCIRC 146r1926
10.6028/NBS.LCIRC.146r1926
Download PDF | Download Citation
Letter Circular 161: waterproofing cotton goods
1926

LCIRC 161r1926
10.6028/NBS.LCIRC.161r1926
Download PDF | Download Citation
Letter Circular 162: publications relating to electric batteries
1926

LCIRC 162r1926
10.6028/NBS.LCIRC.162r1926
Download PDF | Download Citation
Letter Circular 165: publications relating to fire resistance section
1926

LCIRC 165r1926
10.6028/NBS.LCIRC.165r1926
Download PDF | Download Citation
Letter Circular 166: publications which, in whole or in part, are the result of work done by the engineering mechanics section
1926

LCIRC 166r1926
10.6028/NBS.LCIRC.166r1926
Download PDF | Download Citation
Letter Circular 171: requirements, construction and operation of apparatus for measurement of the frequencies of distant radio transmitting stations
1926

LCIRC 171r1926
10.6028/NBS.LCIRC.171r1926
Download PDF | Download Citation
Letter Circular 182: electrical interference with radio reception
1926

LCIRC 182r1926
10.6028/NBS.LCIRC.182r1926
Download PDF | Download Citation
Letter Circular 183: directions for use of the piezo oscillator and auxiliary generator for calibration of a radio frequency meter
1926

LCIRC 183r1926
10.6028/NBS.LCIRC.183r1926
Download PDF | Download Citation
Letter Circular 185: specifications for portable frequency meter for frequencies from 1500 to 15000 kilocycles, Bureau of Standards type K
1926

LCIRC 185r1926
10.6028/NBS.LCIRC.185r1926
Download PDF | Download Citation
Letter Circular 186: specifications for portable piezo oscillator, Bureau of Standards type N
1926

LCIRC 186r1926
10.6028/NBS.LCIRC.186r1926
Download PDF | Download Citation
Letter Circular 187: specifications for portable auxiliary generator, Bureau of Standards type O
1926

LCIRC 187r1926
10.6028/NBS.LCIRC.187r1926
Download PDF | Download Citation
Letter Circular 189: fee schedule 203 for tests of metals and metallic structures
1926

LCIRC 189
10.6028/NBS.LCIRC.189
Download PDF | Download Citation
Letter Circular 191: testing laboratories equipped for mechanical tests of metals and other engineering materials
1926

LCIRC 191
10.6028/NBS.LCIRC.191
Download PDF | Download Citation
Letter Circular 192: corrosion resistance of iron and steel
1926

LCIRC 192
10.6028/NBS.LCIRC.192
Download PDF | Download Citation
Letter Circular 193: influence of sheeting upon the heat-retailing properties of blankets
1926

LCIRC 193
10.6028/NBS.LCIRC.193
Download PDF | Download Citation
Letter Circular 194: list of scientific publications of the laboratory for special radio transmission research, formerly the U.S. Naval radio research laboratory
1926
LW Austin
LCIRC 194
10.6028/NBS.LCIRC.194
Download PDF | Download Citation
Letter Circular 195:testing laboratories equipped for metallurgical tests 
1926

LCIRC 195
10.6028/NBS.LCIRC.195
Download PDF | Download Citation
Letter Circular 196: testing laboratories equipped for chemical analysis
1926

LCIRC 196
10.6028/NBS.LCIRC.196
Download PDF | Download Citation
Letter Circular 197: work shops of science
1926

LCIRC 197
10.6028/NBS.LCIRC.197
Download PDF | Download Citation
Letter Circular 198: some outstanding accomplishments of the Bureau of Standards in 1925
1926

LCIRC 198
10.6028/NBS.LCIRC.198
Download PDF | Download Citation
Letter Circular 199: selenium cells; photoelectric cells; thermopiles
1926

LCIRC 199
10.6028/NBS.LCIRC.199
Download PDF | Download Citation
Letter Circular 200: measurement of crankcase dilution, capillary funnel method
1926

LCIRC 200
10.6028/NBS.LCIRC.200
Download PDF | Download Citation
Letter Circular 201: suggestions for a trip through the Bureau of Standards
1926

LCIRC 201
10.6028/NBS.LCIRC.201
Download PDF | Download Citation
Letter Circular 202: fees for electrical testing
1926

LCIRC 202
10.6028/NBS.LCIRC.202
Download PDF | Download Citation
Letter Circular 203: fees for photometric testing
1926

LCIRC 203
10.6028/NBS.LCIRC.203
Download PDF | Download Citation
Letter Circular 204: metals do not crystallize under vibration
1926

LCIRC 204
10.6028/NBS.LCIRC.204
Download PDF | Download Citation
Letter Circular 205: sound proof partitions
1926
PR Heyl
LCIRC 205
10.6028/NBS.LCIRC.205
Download PDF | Download Citation
Letter Circular 206: general report of the U.S. Bureau of Standards investigation of car load freight weighing facilities during the fiscal year 1926, ending June 30, 1926
1926

LCIRC 206
10.6028/NBS.LCIRC.206
Download PDF | Download Citation
Letter Circular 207: bibliography on radio wave phenomena and measurement of radio field intensities
1926

LCIRC 207
10.6028/NBS.LCIRC.207
Download PDF | Download Citation
Letter Circular 208: zinc plating from acid baths
1926

LCIRC 208
10.6028/NBS.LCIRC.208
Download PDF | Download Citation
Letter Circular 209: general policy of the Bureau of Standards with regard to testing
1926

LCIRC 209
10.6028/NBS.LCIRC.209
Download PDF | Download Citation
Letter Circular 210: acoustics of motor car bodies
1926
PR Heyl
LCIRC 210
10.6028/NBS.LCIRC.210
Download PDF | Download Citation
Letter Circular 211: the application of chromium plating to gates
1926

LCIRC 211
10.6028/NBS.LCIRC.211
Download PDF | Download Citation
Letter Circular 212: publications of the bituminous laboratory
1926

LCIRC 212
10.6028/NBS.LCIRC.212
Download PDF | Download Citation
Letter Circular 213: testing clay hollow tile
1926

LCIRC 213
10.6028/NBS.LCIRC.213
Download PDF | Download Citation
Letter Circular 214: requirements of constant frequency stations
1926

LCIRC 214
10.6028/NBS.LCIRC.214
Download PDF | Download Citation
Letter Circular 215: thermal expansion of solids
1926

LCIRC 215
10.6028/NBS.LCIRC.215
Download PDF | Download Citation
Letter Circular 216: facts about the Bureau of Standards
1926

LCIRC 216
10.6028/NBS.LCIRC.216
Download PDF | Download Citation
Letter Circular 217: colorimetry at the National Bureau of Standards
1926

LCIRC 217
10.6028/NBS.LCIRC.217
Download PDF | Download Citation
Letter Circular 218: new fees and new tests for standard weights
1926

LCIRC 218
10.6028/NBS.LCIRC.218
Download PDF | Download Citation
Letter Circular 273: papers on colorimetry from the National Bureau of Standards
1926

LCIRC 273r1929
10.6028/NBS.LCIRC.273r1929
Download PDF | Download Citation
Letter Circular 30: information on refrigeration
1926

LCIRC 30r1926
10.6028/NBS.LCIRC.30r1926
Download PDF | Download Citation
Letter Circular 60: publications relating to accident prevention and safety
1926

LCIRC 60r1926
10.6028/NBS.LCIRC.60r1926
Download PDF | Download Citation
Letter Circular 61: hardened copper
1926

LCIRC 61r1926
10.6028/NBS.LCIRC.61r1926
Download PDF | Download Citation
Letter Circular 74: standard specifications for sieves standard sieve series
1926

LCIRC 74r1926
10.6028/NBS.LCIRC.74r1926
Download PDF | Download Citation
Letter Circular 85: fees for magnetic testing
1926

LCIRC 85r1926
10.6028/NBS.LCIRC.85r1926
Download PDF | Download Citation
Letter Circular 118 supplement 
1925

LCIRC 118sup1925
10.6028/NBS.LCIRC.118sup1925
Download PDF | Download Citation
Letter Circular 125: throwing power in copper and nickel deposition
1925

LCIRC 125r1925
10.6028/NBS.LCIRC.125r1925
Download PDF | Download Citation
Letter Circular 131: publications relating to ceramics
1925

LCIRC 131r1925
10.6028/NBS.LCIRC.131r1925
Download PDF | Download Citation
Letter Circular 143: textiles
1925

LCIRC 143
10.6028/NBS.LCIRC.143
Download PDF | Download Citation
Letter Circular 143: textiles
1925

LCIRC 143r1925
10.6028/NBS.LCIRC.143r1925
Download PDF | Download Citation
Letter Circular 144: publications of section VII-7, Bureau of Standards lime
1925

LCIRC 144
10.6028/NBS.LCIRC.144
Download PDF | Download Citation
Letter Circular 144: publications relating to lime
1925

LCIRC 144r1925
10.6028/NBS.LCIRC.144r1925
Download PDF | Download Citation
Letter Circular 145: publications of section VII-7, Bureau of Standards gypsum
1925

LCIRC 145
10.6028/NBS.LCIRC.145
Download PDF | Download Citation
Letter Circular 145: publications relating to gypsum
1925

LCIRC 145r11/1925
10.6028/NBS.LCIRC.145r11/1925
Download PDF | Download Citation
Letter Circular 145: publications relating to gypsum
1925

LCIRC 145r6/1925
10.6028/NBS.LCIRC.145r6/1925
Download PDF | Download Citation
Letter Circular 146: publications of section VII-7, Bureau of Standards sand-lime brick
1925

LCIRC 146
10.6028/NBS.LCIRC.146
Download PDF | Download Citation
Letter Circular 146: publications relating to sand-lime brick
1925

LCIRC 146r1925
10.6028/NBS.LCIRC.146r1925
Download PDF | Download Citation
Letter Circular 150: dry etching of glass
1925

LCIRC 150
10.6028/NBS.LCIRC.150
Download PDF | Download Citation
Letter Circular 151: analysis of raw tanning materials
1925

LCIRC 151
10.6028/NBS.LCIRC.151
Download PDF | Download Citation
Letter Circular 152: specifications for the manufacture and installation of motor truck, built-in, self-contained, and portable scales for railroad services
1925

LCIRC 152
10.6028/NBS.LCIRC.152
Download PDF | Download Citation
Letter Circular 153: abridged volume correction table for petroleum oils
1925

LCIRC 153
10.6028/NBS.LCIRC.153
Download PDF | Download Citation
Letter Circular 154: list of letter circulars
1925

LCIRC 154
10.6028/NBS.LCIRC.154
Download PDF | Download Citation
Letter Circular 155: publications by the Bureau of Standards on cement, concrete, reinforced concrete, stucco, magnesite, building stone and related subjects
1925

LCIRC 155
10.6028/NBS.LCIRC.155
Download PDF | Download Citation
Letter Circular 156: contributions to technical literature on cement, concrete, reinforced concrete, stucco, magnesite, building stone and related subjects
1925

LCIRC 156
10.6028/NBS.LCIRC.156
Download PDF | Download Citation
Letter Circular 157: foreign sole leathers
1925

LCIRC 157
10.6028/NBS.LCIRC.157
Download PDF | Download Citation
Letter Circular 159: abridged volume correction table for petroleum oils
1925

LCIRC 159
10.6028/NBS.LCIRC.159
Download PDF | Download Citation
Letter Circular 160: abridged volume correction table for petroleum oils
1925

LCIRC 160
10.6028/NBS.LCIRC.160
Download PDF | Download Citation
Letter Circular 160: abridged volume correction table for petroleum oils
1925

LCIRC 160r1925
10.6028/NBS.LCIRC.160r1925
Download PDF | Download Citation
Letter Circular 161: waterproofing cotton goods
1925

LCIRC 161
10.6028/NBS.LCIRC.161
Download PDF | Download Citation
Letter Circular 162: publications relating to electric batteries
1925

LCIRC 162
10.6028/NBS.LCIRC.162
Download PDF | Download Citation
Letter Circular 163: nickel plating on zinc and zinc-base die castings
1925

LCIRC 163
10.6028/NBS.LCIRC.163
Download PDF | Download Citation
Letter Circular 164: sources of information and data on the properties of metals and alloys
1925

LCIRC 164r1925
10.6028/NBS.LCIRC.164r1925
Download PDF | Download Citation
Letter Circular 165: publications relating to fire resistance of materials and fire prevention
1925

LCIRC 165
10.6028/NBS.LCIRC.165
Download PDF | Download Citation
Letter Circular 166: publications of the engineering mechanics section
1925

LCIRC 166
10.6028/NBS.LCIRC.166
Download PDF | Download Citation
Letter Circular 167: twelve outstanding accomplishments of the Bureau of Standards in 1924
1925

LCIRC 167
10.6028/NBS.LCIRC.167
Download PDF | Download Citation
Letter Circular 168: addresses of sources of publications issued by the lime, gypsum and sand-lime brick section
1925

LCIRC 168
10.6028/NBS.LCIRC.168
Download PDF | Download Citation
Letter Circular 169: miscellaneous publications of the lime, gypsum, and sand-lime brick section
1925

LCIRC 169
10.6028/NBS.LCIRC.169
Download PDF | Download Citation
Letter Circular 170: motor lubricating oils
1925

LCIRC 170
10.6028/NBS.LCIRC.170
Download PDF | Download Citation
Letter Circular 171: requirements, construction and operation of apparatus for measurement of the frequencies of distant radio transmitting stations
1925

LCIRC 171
10.6028/NBS.LCIRC.171
Download PDF | Download Citation
Letter Circular 172: the protective value of nickel plating on iron and steel
1925

LCIRC 172
10.6028/NBS.LCIRC.172
Download PDF | Download Citation
Letter Circular 173: magnetic analysis
1925

LCIRC 173
10.6028/NBS.LCIRC.173
Download PDF | Download Citation
Letter Circular 174: reclaiming crude rubber
1925

LCIRC 174
10.6028/NBS.LCIRC.174
Download PDF | Download Citation
Letter Circular 175: note on flask failure in the oxidation test
1925

LCIRC 175
10.6028/NBS.LCIRC.175
Download PDF | Download Citation
Letter Circular 176: publications relating to leather
1925

LCIRC 176
10.6028/NBS.LCIRC.176
Download PDF | Download Citation
Letter Circular 177: the application of chromium plating to printing plates
1925

LCIRC 177
10.6028/NBS.LCIRC.177
Download PDF | Download Citation
Letter Circular 178: publications relating to rubber
1925

LCIRC 178
10.6028/NBS.LCIRC.178
Download PDF | Download Citation
Letter Circular 179: portable machines for measuring the wheel loads of vehicles
1925

LCIRC 179
10.6028/NBS.LCIRC.179
Download PDF | Download Citation
Letter Circular 180: specifications for radio frequency indicator, type B
1925

LCIRC 180
10.6028/NBS.LCIRC.180
Download PDF | Download Citation
Letter Circular 181: references on the subject of rubber (other than publications of the Bureau of Standards)
1925

LCIRC 181
10.6028/NBS.LCIRC.181
Download PDF | Download Citation
Letter Circular 182: electrical interference with radio reception
1925

LCIRC 182
10.6028/NBS.LCIRC.182
Download PDF | Download Citation
Letter Circular 183: directions for use of the piezo oscillator and auxiliary generator for calibration of a radio frequency meter
1925

LCIRC 183
10.6028/NBS.LCIRC.183
Download PDF | Download Citation
Letter Circular 184: general report of the work of the railroad track scale testing service of the U.S. Bureau of Standards during the fiscal year, 1925:July 1, 1924 to June 30, 1925
1925

LCIRC 184
10.6028/NBS.LCIRC.184
Download PDF | Download Citation
Letter Circular 185: specifications for portable frequency meter for frequencies from 1500 to 15000 kilocycles, Bureau of Standards type K
1925

LCIRC 185
10.6028/NBS.LCIRC.185
Download PDF | Download Citation
Letter Circular 186: specifications for portable piezo oscillator, Bureau of Standards type N
1925

LCIRC 186
10.6028/NBS.LCIRC.186
Download PDF | Download Citation
Letter Circular 187: specifications for portable auxiliary generator, Bureau of Standards type O
1925

LCIRC 187
10.6028/NBS.LCIRC.187
Download PDF | Download Citation
Letter Circular 188: sound proof partitions
1925
PR Heyl
LCIRC 188
10.6028/NBS.LCIRC.188
Download PDF | Download Citation
Letter Circular 190: altitude-pressure tables based on the United States standard atmosphere
1925
WG Brombacher
LCIRC 190
10.6028/NBS.LCIRC.190
Download PDF | Download Citation
Letter Circular 24: standard thickness of sheet metal
1925

LCIRC 24r1925
10.6028/NBS.LCIRC.24r1925
Download PDF | Download Citation
Letter Circular 28: anti-freezing solutions for automobile radiators
1925

LCIRC 28r1925
10.6028/NBS.LCIRC.28r1925
Download PDF | Download Citation
Letter Circular 2: leather, paper, rubber, and textiles
1925

LCIRC 2r1925
10.6028/NBS.LCIRC.2r1925
Download PDF | Download Citation
Letter Circular 40: radio publications of the Bureau of Standards
1925

LCIRC 40r1925
10.6028/NBS.LCIRC.40r1925
Download PDF | Download Citation
Letter Circular 58 
1925

LCIRC 58r1925
10.6028/NBS.LCIRC.58r1925
Download PDF | Download Citation
Letter Circular 80: publications relating to gas
1925

LCIRC 80r1925
10.6028/NBS.LCIRC.80r1925
Download PDF | Download Citation
Letter Circular 86: methods of measuring voltage amplification of amplifiers
1925

LCIRC 86r1925
10.6028/NBS.LCIRC.86r1925
Download PDF | Download Citation
Letter Circular 110: information on heating and ventilation
1924

LCIRC 110
10.6028/NBS.LCIRC.110
Download PDF | Download Citation
Letter Circular 111: characteristics, treatment and uses of high-speed tool steel
1924

LCIRC 111
10.6028/NBS.LCIRC.111
Download PDF | Download Citation
Letter Circular 112: twelve outstanding accomplishments of the Bureau of Standards in 1923
1924

LCIRC 112
10.6028/NBS.LCIRC.112
Download PDF | Download Citation
Letter Circular 113: fire resistance of clay hollow wall tile
1924

LCIRC 113
10.6028/NBS.LCIRC.113
Download PDF | Download Citation
Letter Circular 114: U.S. petroleum oil table
1924

LCIRC 114
10.6028/NBS.LCIRC.114
Download PDF | Download Citation
Letter Circular 115: behavior of nickel anodes
1924

LCIRC 115
10.6028/NBS.LCIRC.115
Download PDF | Download Citation
Letter Circular 116: conversion tables for square feet into square meters, square meters into square feet, cubic feet into cubic meters, and cubic meters into cubic feet
1924

LCIRC 116
10.6028/NBS.LCIRC.116
Download PDF | Download Citation
Letter Circular 117: selenium cells
1924

LCIRC 117
10.6028/NBS.LCIRC.117
Download PDF | Download Citation
Letter Circular 118: publications from the division of metallurgy
1924

LCIRC 118
10.6028/NBS.LCIRC.118
Download PDF | Download Citation
Letter Circular 119: Bureau of Standards research associate plan
1924

LCIRC 119
10.6028/NBS.LCIRC.119
Download PDF | Download Citation
Letter Circular 120: conductivity of nickel solutions
1924

LCIRC 120
10.6028/NBS.LCIRC.120
Download PDF | Download Citation
Letter Circular 121: publications on electrodeposition from the Bureau of Standards
1924

LCIRC 121
10.6028/NBS.LCIRC.121
Download PDF | Download Citation
Letter Circular 122: memorandum on specimens for fiber rope
1924

LCIRC 122
10.6028/NBS.LCIRC.122
Download PDF | Download Citation
Letter Circular 123: kilocycle-meter conversion table
1924

LCIRC 123
10.6028/NBS.LCIRC.123
Download PDF | Download Citation
Letter Circular 124: recommended specification for powdered ammonia
1924

LCIRC 124
10.6028/NBS.LCIRC.124
Download PDF | Download Citation
Letter Circular 125: throwing power in copper and nickel deposition
1924

LCIRC 125
10.6028/NBS.LCIRC.125
Download PDF | Download Citation
Letter Circular 127: specifications for tickets for type-registering weigh beams
1924

LCIRC 127
10.6028/NBS.LCIRC.127
Download PDF | Download Citation
Letter Circular 128: specifications for hand operated grain hopper scales
1924

LCIRC 128
10.6028/NBS.LCIRC.128
Download PDF | Download Citation
Letter Circular 129: state laws and rules and regulations relating to milk bottles
1924

LCIRC 129
10.6028/NBS.LCIRC.129
Download PDF | Download Citation
Letter Circular 130: abridged U.S. petroleum oil table
1924

LCIRC 130
10.6028/NBS.LCIRC.130
Download PDF | Download Citation
Letter Circular 131: publications relating to ceramics
1924

LCIRC 131
10.6028/NBS.LCIRC.131
Download PDF | Download Citation
Letter Circular 132: the organization and work of the United States Bureau of Standards
1924

LCIRC 132
10.6028/NBS.LCIRC.132
Download PDF | Download Citation
Letter Circular 133: house heating with oil
1924

LCIRC 133
10.6028/NBS.LCIRC.133
Download PDF | Download Citation
Letter Circular 134: painting of steam and hot water radiators
1924

LCIRC 134
10.6028/NBS.LCIRC.134
Download PDF | Download Citation
Letter Circular 135: general report of the work of the railroad track scale testing service of the Bureau of Standards July 1, 1923, to June 30, 1924
1924

LCIRC 135
10.6028/NBS.LCIRC.135
Download PDF | Download Citation
Letter Circular 136: memorandum regarding preparation of wire rope specimens for tensile strength tests
1924

LCIRC 136
10.6028/NBS.LCIRC.136
Download PDF | Download Citation
Letter Circular 137: the safety of theatre proscenium curtains
1924

LCIRC 137
10.6028/NBS.LCIRC.137
Download PDF | Download Citation
Letter Circular 138: publications relating to building materials, construction, and building codes
1924

LCIRC 138
10.6028/NBS.LCIRC.138
Download PDF | Download Citation
Letter Circular 28: anti-freezing solutions for automobile radiators
1924

LCIRC 28r1924
10.6028/NBS.LCIRC.28r1924
Download PDF | Download Citation
Letter Circular 35: publications relating to petroleum products
1924

LCIRC 35r1924
10.6028/NBS.LCIRC.35r1924
Download PDF | Download Citation
Letter Circular 38: reports and papers relative to the investigation of automotive power plants, Bureau of Standards
1924

LCIRC 38r1924
10.6028/NBS.LCIRC.38r1924
Download PDF | Download Citation
Letter Circular 40: radio publications of the Bureau of Standards
1924

LCIRC 40r1924
10.6028/NBS.LCIRC.40r1924
Download PDF | Download Citation
Letter Circular 58 
1924

LCIRC 58r1924
10.6028/NBS.LCIRC.58r1924
Download PDF | Download Citation
Letter Circular 59: paints, varnish, etc
1924

LCIRC 59r111924
10.6028/NBS.LCIRC.59r11/1924
Download PDF | Download Citation
Letter Circular 59: paints, varnish, etc
1924

LCIRC 59r051924
10.6028/NBS.LCIRC.59r5/1924
Download PDF | Download Citation
Letter Circular 74: standard specifications for sieves standard sieve series
1924

LCIRC 74r1924
10.6028/NBS.LCIRC.74r1924
Download PDF | Download Citation
Letter Circular 87: methods of measuring properties of electron tubes
1924

LCIRC 87r1924
10.6028/NBS.LCIRC.87r1924
Download PDF | Download Citation
Letter Circular 100: oil heating
1923

LCIRC 100
10.6028/NBS.LCIRC.100
Download PDF | Download Citation
Letter Circular 101: U.S. petroleum oil tables
1923

LCIRC 101
10.6028/NBS.LCIRC.101
Download PDF | Download Citation
Letter Circular 102: tests of radio receiving sets, III
1923

LCIRC 102
10.6028/NBS.LCIRC.102
Download PDF | Download Citation
Letter Circular 103: description of a series of single-layer inductance coils suitable for radio-frequency standards
1923

LCIRC 103
10.6028/NBS.LCIRC.103
Download PDF | Download Citation
Letter Circular 105: application of statistical analysis to radio transmission problems
1923

LCIRC 105
10.6028/NBS.LCIRC.105
Download PDF | Download Citation
Letter Circular 106: notes on upholstery leather specifications, II
1923

LCIRC 106
10.6028/NBS.LCIRC.106
Download PDF | Download Citation
Letter Circular 107: emissivity of paints for radiators, canopies, etc.
1923

LCIRC 107
10.6028/NBS.LCIRC.107
Download PDF | Download Citation
Letter Circular 108: lead errors in commercial screw threads, taps, and dies
1923
DR Miller, IH Fullmer
LCIRC 108
10.6028/NBS.LCIRC.108
Download PDF | Download Citation
Letter Circular 13: inspection of taper thread gages
1923

LCIRC 13
10.6028/NBS.LCIRC.13
Download PDF | Download Citation
Letter Circular 18 (Communication B516): important European screw thread systems and dimensions of bolt and screw heads and nuts
1923

LCIRC 18r1923
10.6028/NBS.LCIRC.18r1923
Download PDF | Download Citation
Letter Circular 23: measurement of pitch diameter of screw thread gages
1923

LCIRC 23r1923
10.6028/NBS.LCIRC.23r1923
Download PDF | Download Citation
Letter Circular 40: radio publications of the Bureau of Standards
1923

LCIRC 40r11/1923
10.6028/NBS.LCIRC.40r11/1923
Download PDF | Download Citation
Letter Circular 40: radio publications of the Bureau of Standards
1923

LCIRC 40r1923
10.6028/NBS.LCIRC.40r1923
Download PDF | Download Citation
Letter Circular 57: tests on asbestos and rubber sheet packing
1923

LCIRC 57
10.6028/NBS.LCIRC.57
Download PDF | Download Citation
Letter Circular 59: paints, varnish, etc
1923

LCIRC 59r1923
10.6028/NBS.LCIRC.59r1923
Download PDF | Download Citation
Letter Circular 6: National Bureau of Standards
1923

LCIRC 6r1923
10.6028/NBS.LCIRC.6r1923
Download PDF | Download Citation
Letter Circular 84: tests of pneumatic tires & inner tubes
1923

LCIRC 84
10.6028/NBS.LCIRC.84
Download PDF | Download Citation
Letter Circular 85: fees for magnetic testing
1923

LCIRC 85
10.6028/NBS.LCIRC.85
Download PDF | Download Citation
Letter Circular 86: methods of measuring voltage amplification of amplifiers
1923

LCIRC 86
10.6028/NBS.LCIRC.86
Download PDF | Download Citation
Letter Circular 87: methods of measuring properties of electron tubes
1923

LCIRC 87
10.6028/NBS.LCIRC.87
Download PDF | Download Citation
Letter Circular 88: the performance of railroad track scales
1923

LCIRC 88
10.6028/NBS.LCIRC.88
Download PDF | Download Citation
Letter Circular 89: conversion tables for petroleum oils
1923

LCIRC 89
10.6028/NBS.LCIRC.89
Download PDF | Download Citation
Letter Circular 90: tests of radio receiving sets, I
1923

LCIRC 90
10.6028/NBS.LCIRC.90
Download PDF | Download Citation
Letter Circular 91: fitting of plugs for class b weights
1923

LCIRC 91
10.6028/NBS.LCIRC.91
Download PDF | Download Citation
Letter Circular 92: radio signals of standard frequency and their utilization
1923
HJ Walls
LCIRC 92
10.6028/NBS.LCIRC.92
Download PDF | Download Citation
Letter Circular 92: radio signals of standard frequency and their utilization
1923

LCIRC 92r1923
10.6028/NBS.LCIRC.92r1923
Download PDF | Download Citation
Letter Circular 93: tests of radio receiving sets, II (crystal detector)
1923

LCIRC 93
10.6028/NBS.LCIRC.93
Download PDF | Download Citation
Letter Circular 94: calibration boxes for testing machines
1923

LCIRC 94
10.6028/NBS.LCIRC.94
Download PDF | Download Citation
Letter Circular 95: U.S. petroleum oil tables
1923

LCIRC 95
10.6028/NBS.LCIRC.95
Download PDF | Download Citation
Letter Circular 96: specific gravity and weight per gallon of milk and cream
1923

LCIRC 96
10.6028/NBS.LCIRC.96
Download PDF | Download Citation
Letter Circular 97: notes on the upholstery leather specifications
1923

LCIRC 97
10.6028/NBS.LCIRC.97
Download PDF | Download Citation
Letter Circular 98: some measurements of voltage amplification of audio-frequency amplifiers
1923

LCIRC 98
10.6028/NBS.LCIRC.98
Download PDF | Download Citation
Letter Circular 99: tests on asbestos & rubber sheet packing
1923

LCIRC 99
10.6028/NBS.LCIRC.99
Download PDF | Download Citation
Letter Circular 18 (Communication B516): important European screw thread systems and dimensions of bolt and screw heads and nuts
1922

LCIRC 18
10.6028/NBS.LCIRC.18
Download PDF | Download Citation
Letter Circular 23 (Communication B523): measurement of pitch diameter of screw thread gages
1922

LCIRC 23
10.6028/NBS.LCIRC.23
Download PDF | Download Citation
Letter Circular 24: standard thickness of sheet metal
1922

LCIRC 24
10.6028/NBS.LCIRC.24
Download PDF | Download Citation
Letter Circular 35: publications relating to petroleum products
1922

LCIRC 35
10.6028/NBS.LCIRC.35
Download PDF | Download Citation
Letter Circular 36: public utilities
1922

LCIRC 36
10.6028/NBS.LCIRC.36
Download PDF | Download Citation
Letter Circular 37: clay products
1922

LCIRC 37
10.6028/NBS.LCIRC.37
Download PDF | Download Citation
Letter Circular 38: reports and papers relative to the investigation of automotive power plants, Bureau of Standards
1922

LCIRC 38
10.6028/NBS.LCIRC.38
Download PDF | Download Citation
Letter Circular 39: list of sources of elementary radio information
1922

LCIRC 39
10.6028/NBS.LCIRC.39
Download PDF | Download Citation
Letter Circular 40: radio publications of the Bureau of Standards
1922

LCIRC 40
10.6028/NBS.LCIRC.40
Download PDF | Download Citation
Letter Circular 40: radio publications of the Bureau of Standards
1922

LCIRC 40r1922
10.6028/NBS.LCIRC.40r1922
Download PDF | Download Citation
Letter Circular 41: extension of the Dewey Decimal classification applied to radio
1922

LCIRC 41
10.6028/NBS.LCIRC.41
Download PDF | Download Citation
Letter Circular 43: construction and operation of a very simple radio receiving equipment
1922

LCIRC 43
10.6028/NBS.LCIRC.43
Download PDF | Download Citation
Letter Circular 44: construction and operation of a two-circuit radio receiving equipment with crystal detector
1922

LCIRC 44
10.6028/NBS.LCIRC.44
Download PDF | Download Citation
Letter Circular 45: construction and operation of a simple radiotelegraphic code practice set
1922

LCIRC 45
10.6028/NBS.LCIRC.45
Download PDF | Download Citation
Letter Circular 46: Description of fixed condensers used with simple handmade radio receiving sets
1922

LCIRC 46
10.6028/NBS.LCIRC.46
Download PDF | Download Citation
Letter Circular 48: description and operation of an electron tune detector unity
1922

LCIRC 48
10.6028/NBS.LCIRC.48
Download PDF | Download Citation
Letter Circular 49: description and operation of an audio-frequency amplifier unit for simple radio receiving outfits
1922

LCIRC 49
10.6028/NBS.LCIRC.49
Download PDF | Download Citation
Letter Circular 5: liquid conversion table giving the equivalent number of barrels of 42 gallons each corresponding to a specified number of gallons
1922

LCIRC 5
10.6028/NBS.LCIRC.5
Download PDF | Download Citation
Letter Circular 54 (Communication B420): protection of track scale parts from corrosion
1922

LCIRC 54
10.6028/NBS.LCIRC.54
Download PDF | Download Citation
Letter Circular 55: equipment for testing and adjusting railroad track scales
1922

LCIRC 55
10.6028/NBS.LCIRC.55
Download PDF | Download Citation
Letter Circular 56: methods of radio direction finding as an aid to navigation: the relative advantages of locating the direction finder on shore and on shipboard
1922

LCIRC 56
10.6028/NBS.LCIRC.56
Download PDF | Download Citation
Letter Circular 58: specification for three-inch shelves
1922

LCIRC 58
10.6028/NBS.LCIRC.58
Download PDF | Download Citation
Letter Circular 59: paints, varnish, etc
1922

LCIRC 59
10.6028/NBS.LCIRC.59
Download PDF | Download Citation
Letter Circular 60: accident prevention and safety
1922

LCIRC 60
10.6028/NBS.LCIRC.60
Download PDF | Download Citation
Letter Circular 61: hardened copper
1922

LCIRC 61
10.6028/NBS.LCIRC.61
Download PDF | Download Citation
Letter Circular 62: proposed revision of rule 86 of the National Electrical Code on radio equipment
1922

LCIRC 62
10.6028/NBS.LCIRC.62
Download PDF | Download Citation
Letter Circular 63: testing of spark plugs
1922

LCIRC 63
10.6028/NBS.LCIRC.63
Download PDF | Download Citation
Letter Circular 64: shingle stains
1922

LCIRC 64
10.6028/NBS.LCIRC.64
Download PDF | Download Citation
Letter Circular 65: electron tube amplifier using 60 cycle alternating current to supply power for the filaments and plates
1922

LCIRC 65
10.6028/NBS.LCIRC.65
Download PDF | Download Citation
Letter Circular 66: list of manufacturers and sole United States distributors of radio receiving equipment
1922

LCIRC 66
10.6028/NBS.LCIRC.66
Download PDF | Download Citation
Letter Circular 67: method of designing an objective for an astronomical telescope
1922

LCIRC 67
10.6028/NBS.LCIRC.67
Download PDF | Download Citation
Letter Circular 69: a portable permeability apparatus
1922

LCIRC 69
10.6028/NBS.LCIRC.69
Download PDF | Download Citation
Letter Circular 70: the safety of portable motion picture projectors
1922

LCIRC 70
10.6028/NBS.LCIRC.70
Download PDF | Download Citation
Letter Circular 71: tentative classification of building construction with reference to fire resistance
1922

LCIRC 71
10.6028/NBS.LCIRC.71
Download PDF | Download Citation
Letter Circular 72: sieve testing apparatus
1922

LCIRC 72
10.6028/NBS.LCIRC.72
Download PDF | Download Citation
Letter Circular 73: fees for testing radio apparatus
1922

LCIRC 73
10.6028/NBS.LCIRC.73
Download PDF | Download Citation
Letter Circular 74: standard specifications for sieves
1922

LCIRC 74
10.6028/NBS.LCIRC.74
Download PDF | Download Citation
Letter Circular 75: the secondary standardization of radio wavemeters
1922

LCIRC 75
10.6028/NBS.LCIRC.75
Download PDF | Download Citation
Letter Circular 76: the standardization of inductors at radio frequencies
1922

LCIRC 76
10.6028/NBS.LCIRC.76
Download PDF | Download Citation
Letter Circular 77: the comparison of condensers at radio frequencies
1922

LCIRC 77
10.6028/NBS.LCIRC.77
Download PDF | Download Citation
Letter Circular 78: design of a portable short-wave radio wavemeter
1922

LCIRC 78
10.6028/NBS.LCIRC.78
Download PDF | Download Citation
Letter Circular 8: building construction
1922

LCIRC 8
10.6028/NBS.LCIRC.8
Download PDF | Download Citation
Letter Circular 80: publications relating to gas
1922

LCIRC 80
10.6028/NBS.LCIRC.80
Download PDF | Download Citation
Letter Circular 81 (supplement to LC 54): specifications for paint for use on railroad track scales
1922

LCIRC 81
10.6028/NBS.LCIRC.81
Download PDF | Download Citation
Letter Circular 82: control of acidity in nickel deposition
1922

LCIRC 82
10.6028/NBS.LCIRC.82
Download PDF | Download Citation
Letter Circular 83: the purity of nickel salts
1922

LCIRC 83
10.6028/NBS.LCIRC.83
Download PDF | Download Citation
Letter Circular 1: notes on the relation of the crimp of the filling to the contraction in width after weaving
1921

LCIRC 1
10.6028/NBS.LCIRC.1
Download PDF | Download Citation
Letter Circular 10: list of communications of the gage section
1921

LCIRC 10
10.6028/NBS.LCIRC.10
Download PDF | Download Citation
Letter Circular 140: blast furnace slag as concrete aggregate
1921

LCIRC 140
10.6028/NBS.LCIRC.140
Download PDF | Download Citation
Letter Circular 141: inspection of Portland cement
1921

LCIRC 141
10.6028/NBS.LCIRC.141
Download PDF | Download Citation
Letter Circular 142: the principal requirements of the Portland cement specifications of various countries
1921

LCIRC 142
10.6028/NBS.LCIRC.142
Download PDF | Download Citation
Letter Circular 149: welding practice
1921

LCIRC 149
10.6028/NBS.LCIRC.149
Download PDF | Download Citation
Letter Circular 2: leather, paper, rubber, and textiles
1921

LCIRC 2
10.6028/NBS.LCIRC.2
Download PDF | Download Citation
Letter Circular 26: celluloid
1921

LCIRC 26
10.6028/NBS.LCIRC.26
Download PDF | Download Citation
Letter Circular 27: twelve examples of work accomplished by the Bureau of Standards
1921

LCIRC 27
10.6028/NBS.LCIRC.27
Download PDF | Download Citation
Letter Circular 28: preliminary report on anti-freezing solutions for automobile radiators
1921

LCIRC 28
10.6028/NBS.LCIRC.28
Download PDF | Download Citation
Letter Circular 29: the ideal wall construction
1921

LCIRC 29
10.6028/NBS.LCIRC.29
Download PDF | Download Citation
Letter Circular 3: reclamation of used lubricating oils
1921

LCIRC 3
10.6028/NBS.LCIRC.3
Download PDF | Download Citation
Letter Circular 30: information on refrigeration
1921

LCIRC 30
10.6028/NBS.LCIRC.30
Download PDF | Download Citation
Letter Circular 31: publications relating to heat
1921

LCIRC 31
10.6028/NBS.LCIRC.31
Download PDF | Download Citation
Letter Circular 33: the structure and properties of alternately electrodeposited metals
1921

LCIRC 33
10.6028/NBS.LCIRC.33
Download PDF | Download Citation
Letter Circular 34: lead plating form fluoborate solutions
1921

LCIRC 34
10.6028/NBS.LCIRC.34
Download PDF | Download Citation
Letter Circular 4: the electrodeposition of lead-tin alloys
1921

LCIRC 4
10.6028/NBS.LCIRC.4
Download PDF | Download Citation
Letter Circular 6: National Bureau of Standards
1921

LCIRC 6
10.6028/NBS.LCIRC.6
Download PDF | Download Citation
Letter Circular 7: weights and measures
1921

LCIRC 7
10.6028/NBS.LCIRC.7
Download PDF | Download Citation
Letter Circular 9: metallurgy
1921

LCIRC 9
10.6028/NBS.LCIRC.9
Download PDF | Download Citation
Letter Circular 139: report of service tests on concrete floor treatments
1920

LCIRC 139
10.6028/NBS.LCIRC.139
Download PDF | Download Citation
Letter Circular 147: sources of information and data on the properties of metals and alloys
1920

LCIRC 147r1920
10.6028/NBS.LCIRC.147r1920
Download PDF | Download Citation
Letter Circular 16 (Communication B513): services available at the Bureau of Standards gage laboratory
1920

LCIRC 16r1920
10.6028/NBS.LCIRC.16r1920
Download PDF | Download Citation
Letter Circular 11 (Communication B461): symbols for screw threat notation and formulas
1919

LCIRC 11r1919
10.6028/NBS.LCIRC.11r1919
Download PDF | Download Citation
Letter Circular 12 (Communication B466): procedure of tests and explanation of reports of munition and other limit gages
1919

LCIRC 12r1919
10.6028/NBS.LCIRC.12r1919
Download PDF | Download Citation
Letter Circular 13 (Communication B507): inspection of taper thread gages
1919

LCIRC 13r1919
10.6028/NBS.LCIRC.13r1919
Download PDF | Download Citation
Letter Circular 14 (Communication B510): construction and operation of projection apparatus for measuring screw thread gages and profiles
1919

LCIRC 14r1919
10.6028/NBS.LCIRC.14r1919
Download PDF | Download Citation
Letter Circular 15 (Communication B512): interchangeability of U.S. standards and British standard Whitworth threads by diameter modification
1919

LCIRC 15
10.6028/NBS.LCIRC.15
Download PDF | Download Citation
Letter Circular 17 (Communication B514): explanation of drawings used in manufacture of pitch testing devices
1919

LCIRC 17
10.6028/NBS.LCIRC.17
Download PDF | Download Citation
Letter Circular 20 (Communication B519): the measurement of radii on profile gages
1919

LCIRC 20
10.6028/NBS.LCIRC.20
Download PDF | Download Citation
Letter Circular 21 (Communication B521): the micrometer microscope and its uses in gage inspection
1919

LCIRC 21
10.6028/NBS.LCIRC.21
Download PDF | Download Citation
Letter Circular 22 (Communication B522): the measurement of taper gages
1919

LCIRC 22
10.6028/NBS.LCIRC.22
Download PDF | Download Citation
Letter Circular 32: methods of silvering glass
1919

LCIRC 32
10.6028/NBS.LCIRC.32
Download PDF | Download Citation
Letter Circular 32: methods of silvering glass, supplement
1919

LCIRC 32sup
10.6028/NBS.LCIRC.32sup
Download PDF | Download Citation
Letter Circular 104: heat treatment of steel
1918

LCIRC 104
10.6028/NBS.LCIRC.104
Download PDF | Download Citation
Letter Circular 19 (Communication B517): thread form and clearance of thread gages
1918

LCIRC 19
10.6028/NBS.LCIRC.19
Download PDF | Download Citation