Flight Information Manual. unknown place: U.S. Department of commerce, Civil Aeronautic Administration, Office of Aviation Information, July 1, 1946

Flight Information Manual. unknown place: U.S. Department of commerce, Civil Aeronautic Administration, Office of Aviation Information, July 1, 1946, Volume: Gilbert D341. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525963 Accessed December 28, 2025.