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