First flight air mail cover addressed to Mrs. W. W. Crocker, Burlingame, California, April 22, 1935.Stamped: "First Flight - Pan American Clipper - Hawaii-California."Stamped: "First Flight - Pan American Clipper - California-Hawaii."
First flight air mail cover addressed to Colonel L. G. Blackman, Honolulu, Hawaii, October 8, 1934.Stamped: "First Flight - United States Air Mail – Honolulu, Oahu, T.H. [Territory of Hawaii], USA."
First flight air mail cover addressed to Mr. L. G. Blackman, Honolulu, Hawaii, October 8, 1934.Stamped: "First Flight - United States Air Mail - Hilo, Hawaii, T.H. [Territory of Hawaii], USA."
First flight air mail cover addressed to Mr. Milo [Rauek?], Honolulu, Hawaii, October 8, 1934.Stamped: "First Flight - United States Air Mail - Wailuku, Maui, T.H. [Territory of Hawaii], USA."
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…
Air mail envelope commemorating pilots who died while delivering the mail, May 15, 1934. Addressed to Harold B. Wright in Hutchinson, Kansas.
Text on envelope: "In memorium. U.S. Army. Pilots who died flying the mail. Memorial Day, 1934. Sponsored by…
Air mail envelope commemorating the first day of the U.S. Army Air Corps taking over air mail deliveries, February 19, 1934. Addressed to Cal. E. D. Adams in San Francisco, California.
Text on envelope: "The Army flies the mail. First day cover."
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,…
Air mail envelope commemorating the 15th anniversary of air mail service, May 15, 1933. Addressed to the National Cachet Publishing Service in Brooklyn, New York.
Text from original exhibit label: "Airmail commemorating fifteen years of airmail…
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…