1929, "world round flight", Lakehurst Friedrichshafen, letter slip for 50 mailings New York - Bavaria, with US special confirmation stamp, superb (Image 1) (Image)

1930, "East voyage", droped Riga, board mail, superb postcard (Image 1) (Image)

1931, "Polar travel", handing in for transport Friedrichshafen to Malygin, franked with 4 RM, superb cover (Image 1) (Image)

1933, "Saar region travel", Saar region post, return flight, franked with Michel number 159, superb postcard (Image 1) (Image)

1936, "1, South America flight", printed matter, superb (Image 1) (Image)

1936, "9. North America flight", board mail, cancelled 26.9.36 with brick red confirmation stamp to Lakehurst, there with US-stamps cancelled 29.9.36! Superb cover (Image 1) (Image)