First flight air mail cover addressed to William E. Boeing, Seattle, Washington, from Inter-Island Airways, Ltd., Honolulu, Hawaii, December 5, 1935.Stamped cachet: "First Flight - Transpacific Route F.A.M. Route 14 - Honolulu-San Francisco (Alameda…
Letter to Mr. and Mrs. William E. Boeing from Luke Luqueer, August 20, 1935. Thinks the letter and included air mail cover will be of interest if "Wiley Post makes it in his 'Winnie Mae.'" One typed page and envelope.Stamped: "First Air Mail…
First flight air mail cover addressed to William E. Boeing, Seattle, Washington, from the Glenn L. Martin Company, Cleveland, Ohio, July 1, 1934.Stamped: "Via Air Mail - On first trip of through schedule involving night flying on Transcontinental Air…
Letter to William E. Boeing from Merl LaVoy, October 23, 1933. Sends two first flight air mail covers from the Canton-Shanghai route.Stamped on first envelope: "First Flight, Shanghai-Canton."Stamped on second envelope: "First Flight,…
Postcard to William E. Boeing from the Praegers, August 30, 1931. States that they are leaving Singapore and includes a list of addresses for mail as they travel.
United Airport brochure and first flight air mail cover addressed to William E. Boeing, Seattle, Washington, April 30, 1931.Stamped: "First Flight A.M. Route 4 from United Airport, Burbank, California."Stamped: "First Dispatch - Airmail Field Post…
Letter and air mail cover addressed to William E. Boeing from W. Irving Glover, Second Assistant Postmaster General, June 3, 1930. Congratulates Boeing Air Transport, Inc. on upcoming completion of ten million miles of flight with the Air Mail. One…
Letter and first flight air mail cover "carried on the 'Boeing Hornet Shuttle,'" August 27, 1929. Letter was carried on "the first plane to carry mail while attempting one or more round-trip non-stop flights over the New York-San Francisco air mail…
Letter to William E. Boeing from W. Irving Glover, Second Assistant Postmaster General, March 26, 1929. Forwards two air mail covers from "special flight made by Captain Eaker from Brownsville, Texas to Cristobal, Canal Zone, and return." One typed…
Air mail cover addressed to William E. Boeing, care of W. Irving Glover, Second Assistant Postmaster General, Washington, D.C., from Gerald D. Bliss, Postmaster, Cristobal, Canal Zone, March 18, 1929. Stamped: "Via Special Flight - Cristobal, Canal…