Photograph of William E. Boeing (seated in aircraft) and two unidentified men with an unidentified aircraft, Los Angeles, California, circa 1914.
Inscription: "Los Angeles - 10/14 - First 35 mins. flight - Quite bumpy, good practice."
Photograph of William E. Boeing's Martin Model TA Hydro seaplane in a tent hangar on Lake Washington, Washington State, circa October 1915.Inscription on verso: "Return to Dr. Drew."
Photograph of William E. Boeing's Martin Model TA Hydro seaplane on Lake Washington, October 21, 1915.Inscription: "Trial trip 10/21/15 - Lake Washington - Martin Seaplane."
Photograph of William E. Boeing (left) and an unidentified man with Boeing's Martin Model TA Hydro seaplane, Lake Washington, October 21, 1915.Inscription: "Our return from flight over Seattle 10/21/15."
Photograph of William E. Boeing's Martin Model TA Hydro seaplane in flight over Lake Washington, October 21, 1915.Inscription: "Martin seaplane - Lake Washington, 10/21/15."
Photograph of a Boeing Model 40A air mail aircraft taking off from Elko, Nevada en route for New York, circa July 1, 1927.Inscription on verso: "Air mail leaving Elko, Nevada for N. Y. About July 1st, 1927.1st day of Boeing's operation of…