What If Westland twin-jet fighter-bomber design
Boeing Model 464-17 “what if” – Not quite a Stratofortress, but no longer a Superfortress
Boeing Model 322 Superfortress predecessor “What If”
“What If” B-17 Flying Fortress in prewar US Army Air Corps colors
What-If “High Speed Handley Page Bomber” as a wartime BOAC transport
North American B-45 derivative with turboprops
“What If” Lockheed L-131 fighter
Harrier with a Twist: the Hawker-Siddeley HS.1175
Tu-200: Tupolev’s Mythical Peacemaker