Flying Fortress on Steroids: The Intriguing Tale of Boeing XB-38 - Jets 'n' Props
Boeing B-17 Flying Fortress
Boeing B-17 Survivors, Warbirds Wiki
Boeing B-17D The Swoose > National Museum of the United States Air Force™ > Display
B-17G/PB-1 US NAVY Flying Fortress *Update v2.0*
Is the P51 Mustang really a British plane, since the airframe and design was really from a request by the British Government - while the engine was also from Rolls Royce? - Quora
Boeing B-17 Flying Fortress - Download Free 3D model by helijah (@helijah) [927f07f]
Castle Air Museum goes in heavy with huge bombers, cargo planes - CNET
Boeing XB 38 Flying Fortress - Alchetron, the free social encyclopedia
What are the differences between the Merlin-engined P-51 Mustang and the Rolls Royce Merlin-engined Spitfire? - Quora
Were it not for the coming of the jet engine, could pairs of Spitfires have been usefully reconfigured along the lines of a single Lockheed P-38 Lightning? - Quora