Lufthansa Airlines - Boeing Jet - Nonstop Franfurt - Chicago
Helicopter mail
World Exhibition Liege / Luik
Airplane - Airline Lufthansa - Stamp exhibition
Balloon race Coupe Andries Blitz - Nijmgen - Aachen
Dan Air Airlines - Compass
Sweden - Netherlands
German Air Shipping Company - Hamburg America Line
Rotary Wing Aircraft - Helicopter - Pioneer Flight - Auto ...
Rotary Wing Aircraft - Helicopter