1930 LZ 127 (GRAF ZEPPELIN) LANDUNGSFAHRT NACH BERN UND BASEL
Zürich I. - Aviation History of Switzerland
Zürich I. - Aviation History of Switzerland
Zeppelin Mail Contracting Member States Switzerland: 1929, 50. Trip of the LZ 127, handing in for transport Friedrichshafen with droped St. Gallen, photo postcard from letter | MA-Shops
zeppelin - lz 127 graf - ZVAB
LZ 120 – Wikipedia
File:Switzerland 1930-10-12 Zeppelin PC Sieger 94.jpg - Wikimedia Commons