An absurd 100 passenger trans-atlantic airliner which featured three sets of triplane wings set above a giant fuselage Self-Propelled Strangeness
The strange looking WWII fighter interceptor that you may not know of: XP-56 Black Bullet Self-Propelled
The tetrahedral kites: an early flight experiment made by the inventor of the phone, Alexander Graham Bell Self-Propelled
Albanian Defense Ministry to auction off 36 jets & 4 helicopters from the 1950s & 1970s Self-Propelled