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[First flight air mail cover addressed to Mrs. William E. Boeing, Seattle, Washington, June 22, 1940]
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 F.A.M. 20. Ketchikan, Alaska."
[Air mail cover addressed to William E. Boeing, Seattle, Washington, May 20, 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 - May 15 to 21."