1933 (4 Sep) Germany airmail cover from Passau to Brussels, Flying boat Dornier Do X, flight to Switzerland (Image)

1928 (10 Oct) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to New York (United States), 1st flight to North America 'Friedrichshafen - Lakehurst' (Sieger 21 A, CV $120) (Image)

1929 (22 Apr) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Palestine via Seville then Returned to Sender, Mediterranean Sea flight 'Friedrichshafen-Friedrichshafen' (Image)

1929 (15 May) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to East Orange (United States) via New York, Flight to North America 1929 'Friedrichshafen - Lakehurst' (Flight delay, Sieger 26 A, CV $120) (Image)

1929 (15 May) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to New Jersey (United States) via New York, Flight to North America 1929 'Friedrichshafen - Lakehurst' (Flight delay, Sieger 26 A, CV $120) (Image)

1929 (15 May) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to Philadelphia (United States) via New York, Flight to North America 1929 'Friedrichshafen - Lakehurst' (Flight delay, Sieger 26 A, CV $120) (Image)

1929 (31 Jul) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Washington (United States), Flight to North America 1929 'Friedrichshafen - Lakehurst' (Sieger 27 A, CV $100) (Image)

1929 (15 Aug) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Ueberlingen, World Tour 1929 1st Flight 'Friedrichshafen - Friedrichshafen' (Sieger 30 Ad0) (Image)

1929 (15 Aug) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Winchester (United States), World Tour 1929 1st Flight 'Friedrichshafen - Lakehurst' (Sieger 30 Ac, CV $240) (Image)

1929 (15 Aug) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Tokyo (Japan), World Tour 1929 1st Flight 'Friedrichshafen - Tokio' (Sieger 30 Aa, CV $120) (Image)

1930 (18 May) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Seville (Spain) via New York, 1st Flight to South America 1930 'Friedrichshafen - Seville' (Sieger 57 N0) (Image)

1931 (28 Mar) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Koln via Budapest, Flight to Hungary 1931 'Friedrichshafen - Budapest' (Sieger 101 b) (Image)

1931 (7 Jun) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to Hamburg via Magdeburg, Flight to Magdeburg June 1931 'Friedrichshafen - Magdeburg' (Sieger 190 Ab, CV $80) (Image)

1931 (30 Jun) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to San Rafael (United States) via Reykjavik, Flight to Iceland 1931 'Friedrichshafen - Reykjavik' (Sieger 113 A, CV $90) (Image)

1931 (5 Jul) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to Ratibor (Racibórz) via Gleiwitz, Flight to Upper Silesia 1931 'Friedrichshafen - Gleiwitz' (Sieger 115 Ab, CV $100) (Image)

1931 (24 Jul) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to Roscheim, Polar flight 1931 'Friedrichshafen - Berlin' (Sieger 119 D, CV $350) (Image)

1931 (18 Aug) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to Chicago, Flight to England 1931 'Friedrichshafen - London' (Sieger 112 Ab, CV $120) (Image)

1932 (18 Jun) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Berlin, Flight to the Netherlands 1932 'Friedrichshafen - Enschede' (Sieger 164 Aa) (Image)

1932 (12 Sep) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to Pernambuco (Brazil), Flight to South America 1932 'Friedrichshafen - Recife' (Sieger 177 Aa, CV $140) (Image)

1932 (25 Oct) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Pernambuco (Brazil), Flight to South America 1932 'Friedrichshafen - Recife' (Sieger 195 Aa, CV $120) (Image)

1935 Germany, Airship Passangers Book 'Airship Voyages Made Easy', Zeppelin Corporation, (Image)

1928 (1 Nov) Germany, Graf Zeppelin airship airmail postcard from Offenburg to Friedrichshafen, Prepared as Drop Mail but No Flown (Image)

1929 (22 Apr) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to Chicago (United States) Air Drop San Remo, Orient flight 1929 'Friedrichshafen - Friedrichshafen' (Sieger 24 D, CV $180) (Image)

1929 (13 Oct) Germany, Graf Zeppelin airship airmail cover from Friedrichshafen to Leist (Holland), Flight to Holland 'Friedrichshafen - Friedrichshafen' (Sieger 41 A, CV $90) (Image)

1930 (14 Apr) Germany, Graf Zeppelin airship airmail postcard from Friedrichshafen to East Orange (United States), Flight to Spain 'Friedrichshafen - Sevilla' (Sieger 51 B) (Image)