1932, "VIA DORNIER GREENLAND WHALE By Capt. Wolfgang von Gronau in ROUND THE WORLD FLIGHT" Karte (Ansicht DOX) von Manila nach Surabaya (Java), dazu Karte mit Ansicht "Landung von Gronau im Hafen von Manila" nach Deutschland.

1932, \"VIA DORNIER GREENLAND WHALE By Capt. Wolfgang from Gronau in ROUND THE WORLD FLIGHT\" card (view DOX) from Manila to Surabaya (Java), in addition to it card with view \"Landing from Gronau at the port from Manila\" to Germany. (Philip.331,332) (Image 1) (Image)