Unused subdivisions: Instrument Division; Aerological Division; Marine Division; Meteorological Research Division; Short Range Forecast Development Section; Instrumental Engineering Division; Cooperative Studies Section; Facilities and Meteorological Observations Division; Technical Investigations Section; Spaceflight Meteorology Group
LC manual auth. cd. (hdg.: United States. Army. Signal Corps; Signal officer of the Army was authorized by act June 20, 1860; Signal Corps organ. 1863; by joint resolution 12, Feb. 9, 1870, work of the Signal Corps was extended to embrace the taking of meterological observations; by act approved Oct. 1, 1890, the Weather Bureau was created and meterological work of the Signal office was transferred thereto)
DAH (under: Weather Service; est. 1870 under Army Signal Service; in 1891 assigned to Dept. of Agriculture; at this time, name Weather Bureau was designated; in 1940 Bureau transferred to Dept. of Commerce; in 1970 National Oceanographic and Atmospheric Administration was established and bureau renamed National Weather Service)