us air mail stamps zeppelin

• German Empire 438Y-439Y (complete.issue.) tested unmounted mint / never hinged 1930 Airmail Count Zeppelin 1. Südamer (Stamps for collectors)

  

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• 1933 Graf Zeppelin Flight Letter And Cover Flew On Graf Zeppelin From Chicago Worlds Fair To Germany To Texas 50 Cent Green Zeppelin US Postage Stamp Scott #C18

  

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• .S. 19th Century Covers, U.S. 20th Century Blocks & Singles, Patriotic Covers, U.S. & Foreign Graf Zeppelin Covers, Pioneer U.S. & Foreign Airmail Covers, & 20th Century British Colonials from the Estate of Alfred J. Tormey (Stamp Auction Catalog) (Baltimore Stamp Co., Jan. 28-29, 1941)

  

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• United States, British Empire, General Foreign, Zeppelin & Airmail Covers (Stamp Auction Catalog) (Matthew Bennett, Inc., 194th Public Auction Aug 31, 1995)

  

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• United States and Foreign Stamps: Strong in Airmails, Zeppelin Flights, Western Europe, Lots by Country & Collections, Sale No. 231 (Stamp Auction Catalog) (Earl P.L. Apfelbaum Inc., Sale 231 Feb. 23-24, 1968)

  

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• U. S. Postal History:Extensive Airmail Flights, including Pioneers, Trans-Oceanics, Zeppelins, also Autographs, Provisionals, Foreign Mail Cancels, Pony Express, Auction Catalog, John W. Kaufmann, Inc., Washington, D.C., Sale #87, September 8, 1982

  

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