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."