Photograph of William E. Boeing (right) and an unidentified man in front of steam engine during a logging operation, likely in Washington, circa 1903-1915.
Photograph of unidentified men mounted on three of William E. Boeing's racehorses, circa 1940s. The horses are identified in the inscription as Pony, Slide Rule, and Devil's Thumb.Inscription on verso: "Pony, Slide Rule, Devil's Thumb."
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."
Photograph of William E. Boeing and Uncle Rudie in Boston, Massachusetts, circa 1897.Inscription on verso: "Uncle Rudie + W.E.B. in Boston about 1897 before going to St. Paul's School."
Photographic group portrait of students and teachers at the boarding school Institution Sillig Frères, Vevey, Switzerland, circa 1894. William E. Boeing is seated in the front row, fourth from the left.Typed caption: "Institution Sillig Frères.…