5th International Aviation Congress The Hague 1930
Thai - First Royal Orchid Flight from Amsterdam
Singapore Airlines
Zeppelin - Agriculture vehicle - Tractor
Brothers Wright - Memorial Flight
International Balloon race
Air balloon flight - St. Ingbert Saar - Luxembourg
Cachet Steamship Columbus - Airmail - Goethe
100 Years Zeppelin
Zeppelin - Airmail - Hermann E. Sieger
