"Prepared under the direction of the Chief of Staff, U.S. Air Force for the Aeronautical Chart Service."; "Base no. 1, March 1949."; "31 March 1949."; "AL-204."; Instrument approach chart includes chart of "C.A.A.-U.S.A.F. instrument approach procedure, 1 Feb. 1949." Scale approximately 1:226,000