A-20E was the designation assigned to 17 A-20As lightened and used for
training and various experimental projects. It is believed that many
of these were late production A-20As fitted with 1690 hp R-2600-11
engines. The serial numbers of the A-20Es are unknown.
American Combat Planes, Third Enlarged Edition, Ray Wagner, Doubleday,
McDonnell Douglas Aircraft Since 1920, Vol 1, Rene J. Francillon,
Naval Institute Press, 1988
United States Military Aircraft Since 1909, Gordon Swanborough and
Peter M. Bowers, Smithsonian, 1989.
A-20 Havoc in Action, Aircraft Number 144, Squadron/Signal Publications,
Jim Mesko, 1994.
Famous Bombers of the Second World War, William Green, Doubleday, 1960
Boston, Mitchell and Liberator In Australian Service, Stewart Wilson,
Aerospace Publications, 1992.
Jane's Fighting Aircraft of World War II, Military Press, 1989.