091 b: Countries, USSR, "Characteristics and Performance Handbook, U.S.S.R., Aircraft and Armament" (Assistant Chief of Air Staff 2 and Office of Naval Intelligence, 9 Jul 1947)

091 b: Countries, USSR, "Supplement to Characteristics and Performance Handbook, U.S.S.R., Aircraft and Armament" (Directorate of Intelligence and Office of Naval Intelligence, 1 Jan 1948)