Protest card - About air vehicle construction - Airplanes
Opening Coachella Valley Airport
Paul von Hindenburg - FFC Braunschweig - Brocken
Zeppelin - Agriculture vehicle - Tractor
Airplane - Junker - Dessau - Leopold III
Airplane - Farmers - Tractor - Defence
Ferdinand von Zeppelin - Zeppelinmail Exhibition
Cachet Steamship Columbus - Airmail - Goethe
Mark: Because of faster possibility Airmail via Railway
