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San Diego Air & Space Museum Archives: Bilstein_00005 Donald Douglas
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kitradioco: Bleriot style monoplane
Tekniska museet: Fokkervinge
Tekniska museet: Junkers junior
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San Diego Air & Space Museum Archives: --breguet 19 with screw type propellor
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GerhardQ: Flugplatzfest Bruchsal Großmodellflugtag 2
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San Diego Air & Space Museum Archives: Carl Gwartney Collection Image