Waybill of mail dispatched from Vancouver, B.C. to Seattle, Washington by hydro-airplane at 12:45pm, March 3, 1919. Includes handwritten note: "Received Seattle P.O. March 3, 1919, 4:20pm - C. M. Perkins, Supt. Mail." One typed page.
Air mail cover addressed to Mr. O. W. Tupper, Seattle, Washington, February 2, 1927. Includes postmark stamps from Washington, D.C., Chicago, Illinois, and Pasco, Washington. One envelope.
First flight air mail cover addressed to Master Bebo Boeing, Seattle, Washington, July 1, 1927. Stamped: "First Flight Under Contract - Chicago to San Francisco - Transcontinental Air Mail Route, Omaha, Nebraska."
First flight air mail cover addressed to William E. Boeing, Chicago, Illinois, July 1, 1927.Stamped: "First Flight Under Contract - Chicago to San Francisco - Transcontinental Air Mail Route, Omaha, Nebraska."
First flight air mail cover addressed to William E. Boeing, Chicago, Illinois, July 1, 1927. Signed by pilot Hugh Barker.Stamped: "First Flight Under Contract Chicago - San Francisco - Transcontinental Air Mail Route. Salt Lake City, Utah."
Postcard to William E. Boeing from the Finleys, September 25, 1928. Sends thanks for the photograph and describes a unique globe he has in his office [replicated on postcard]. Also includes a second postcard with a poem about aviation.
Letter to Edward S. Campbell from William E. Boeing's office, February 19, 1929. Thanks Campbell for the "first-hand information relative to the success of your trip" and notes that Boeing will review correspondence upon his return. One typed page.
Postcard addressed to Herrn M. Cremer, Bremen, Germany, September 11, 1930. Sent via air mail aboard the Graf Zeppelin from Russia. Stamped on front of postcard: "Mit Luftschiff Graf Zeppelin, Moskau - Friedrichshafen."
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.
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."