McGowen, Stanley S. Helicopters: An Illustrated History of Their Impact (Weapons and Warfare Series). Santa Barbara, CA: ABC-CLIO, 2005. ISBN978-1-85109-468-4.
Mondey, David (1996). The Hamlyn Concise Guide to American Aircraft of World War II. London: Aerospace Publishing Ltd. ISBN0-7858-1361-6.
Myall, Eric and Ray Sturtivant (ed.). The Hoverfly File. Tunbridge Wells, Kent, UK: Air-Britain (Historians) Ltd., 1998. ISBN0-85130-262-9.
Sturtivant, Ray. RAF Flying Training and Support Units since 1912, Air-Britain (Historians), England, 2007, ISBN0 85130 365 X
United States Air Force Museum Guidebook. Wright-Patterson AFB, Ohio: Air Force Museum Foundation, 1975.
Williams, Dr. James W. A History Of Army Aviation: From Its Beginnings To The War On Terror. Bloomington, IN: Iuniverse, 2005. ISBN978-0-595-67396-4.