Commemorative air mail cover addressed to Bill Boeing, Jr., Seattle, Washington, from William E. Boeing, May 19, 1938.Stamped cachet: "20th anniversary of the inauguration of regular air mail service - First National Air Mail Week - May 15-21, 1938 -…
Air mail cover addressed to William E. Boeing, Seattle, Washington, May 20, 1938. Includes a stamped cachet with an image of Glenn L. Martin.Stamped: "Macksburg, IA. Birthplace of Glenn L. Martin (1886-), Designer of Martin Airplanes - Air Mail Week…
Letter to William E. Boeing from Merl LaVoy, U.S. Consulate, Johannesburg, South Africa, August 2, 1938. Includes centenary commemorative envelope with a cachet illustration depicting the Great Trek of 1838 by the Voortrekker [Dutch-speaking…
Letter and first flight air mail cover addressed to Mrs. William E. Boeing, Seattle, Washington, from Clarice De Jarlais, Honolulu, Hawaii, March 13, 1939. Two handwritten pages on Trans-Pacific Air Mail stationery and air mail cover.Stamped cachet:…
Letter and first flight air mail cover addressed to William E. Boeing, from Thomas F. Hamilton, United Aircraft Corporation, May 23, 1939. Sends greetings by first transatlantic air mail service. One typed page and air mail cover.Stamped: "1st…
First flight air mail cover addressed to Bill Boeing, Jr., Claremont, California, from William E. Boeing, June 20, 1940.Stamped cachet: "First Flight F.A.M. 20. Seattle, Washington. U.S. Air Mail."
First flight air mail cover addressed to Mrs. William E. Boeing, Seattle, Washington, June 22, 1940. Includes brief note informing Bertha Boeing to keep the cover if interested and return it if not.
Stamped cachet: "Seattle-Juneau, U.S. Air Mail…
Letter and first flight air mail cover addressed to William E. Boeing and Bertha Boeing from Gordon D. Brown, Douglas Aircraft Company, June 27, 1941. Sends cover to celebrate aviation progress.Stamped cachet: "B-19, Initial Flight of World's Largest…
First flight air mail cover addressed to William E. Boeing, Seattle, Washington, from the Glenn L. Martin Company, Baltimore, Maryland, July 3, 1942.Stamped cachet: "First Flight - This cover carried on first official flight of the 'Mars,' built by…