Fortresses List of bomber aircraft List of military aircraft of the United States Notes References Bibliography Baugher, J Boeing B-17 Fortress, 1999, American Military Aircraft Boeing Model 299, Boeing Y1B-17, Boeing Y1B-17A/B-17A, Boeing B-17B Fortress, B-17C, Fortress , Boeing B-17D Fortress, Boeing B-17F Fortress, BQ-7 accessed on January 12, 2005, B-17E, Fortress IIA, Vega XB-38, Boeing YB-40, Boeing C-108, BQ-7, F-9 Photographic Reconnaissance Model 299 Crash, Army press release, Intercepting the Rex, Y1B-17, Y1B-17A, B-17B, B-17C, B-17D, B-17D "The Swoose", B-17F, B-17G, B-17E, XB-38, XB-40 Freeman, Roger. The Mighty Eighth War Manual (1991) pp. 148–153. Bishop, Cliff T. Fortresses of the Big Triangle First (1986) p. 51, Bowers, Peter M. Boeing Aircraft Since 1916. London: Putnam, 1989. . Hess, William N. Big Bombers of WWII. Ann Arbor, Michigan: Lowe & B. Hould, 1998. . Hess, William N. and Jim Winchester. "Boeing B-17 Flying Fortress: Queen of the Skies" Wings Of Fame. Volume 6, 1997, pp. 38–103. London: Aerospace Publishing. . . Hickey, Lawrence J. (with Birdsall, Steve; Jonas, Madison D.; Rogers, Edwards M.; and Tagaya, Osamu). Ken’s Men Against the Empire: The Illustrated History of the 43rd Bombardment Group During World War II (Volume I: Prewar to October 1943, The B-17 Era). International Historical Research Associates, 2016. . Jablonski, Edward. Flying Fortress. New York: Doubleday, 1965. . Johnson, Frederick A. Boeing B-17 Flying Fortress (Warbird Tech Series, Volume 7). Stillwater, Minnesota: Voyageur Press, 2001. . Listemann, Phil H. Allied Wings No. 7 Boeing Fortress Mk. I. www.raf-in-combat.com, 2009. First edition. . Lloyd, Alwyn T. B-17 Flying Fortress in Detail and Scale. Fallbrook, California: Aero Publishers, 1986. . O'Leary, Michael. Boeing B-17 Flying Fortress (Osprey Production Line to Frontline 2). Botley, Oxford, United Kingdom: Osprey Publishing, 1999. . B-17E 41-2595 History and Restoration Andrade, John M. . U.S Military Aircraft Designations and Serials since 1909. Leicester: Midland Counties Publications, First edition 1979. . Swanborough, Gordon and Peter M. Bowers. United States Navy Aircraft since 1911. London: Putnam, Second edition 1976. . Swanborough, F. G. and Peter M. Bowers. United States Military aircraft since 1909. London: Putnam, 1963 External links Encyclopedia of American Aircraft USAF Museum Flight article of 1942 showing difference between Fortress I and II tailplanes Lone Sentry's page on the B-17's Bendix Chin Turret Variants Lists of aircraft variants