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