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."
Composite photograph of two unidentified men with William E. Boeing's racehorse, Porter's Mite, and Porter's Mite during a race, September 17, 1938.Inscription: "C. C. Cook - photos - New York. 'Porter's Mite' - B. James up. Winner Champagne Stks -…
Photographic portrait of William E. Boeing, circa 1910s-1930s.Inscription on verso: "Con 308. 4 p.m. To Mrs. Stehle (Bill) Russ Blk. Sat. 65-81-07-83."