Letter to an unidentified person from "Wilhelm" (William E. Boeing), October 6, 1872. Four sheets, six handwritten pages on Office of Chas. L. Ortmann stationery, with envelope addressed to Wilhelm Böing in Westfalen, Germany.
Letter to "Wilhelm" (William E. Boeing) from Wilhem Böing, November 6, 1872. Addressed to William E. Böing, care of Charles L. Ortmann, East Saginaw, Michigan. Three handwritten pages in German.
Letter to "Wilhelm" (William E. Boeing) from Wilhelm Böing, June 23, 1874. Addressed to Mr. William Böing, care of Charles L. Ortmann, East Saginaw, Michigan. Two handwritten pages in German.
Letter to and from unidentified persons, April 18, 1883. Two handwritten pages on Wilhelm Boeing letterhead ("Wilhelm Boeing, Pine, Lands and Logs, Detroit, Mich.") and envelope addressed to William E. Boeing, Sr.
Postcard of Glenn Curtis piloting the Curtiss-Herring No.1 "Reims Racer" aircraft, January 1, 1910. Addressed to Fannie Sayago of Guayaquil, Ecuador, from J. Alfred Fermin. Inscription on front and verso are in French.
Typed caption: "Nos Aeroplanes…
Letter to H. A. Toulmin from Wilbur Wright, August 29, 1910. Forwards a plate showing the Henson machine and notes that they do not have a copy of the patent. One typed page.
Note to William E. Boeing from Clairmont L. Egtvedt, circa 1910s. Note reads: "Early aviation ground work? --Claire." Included a photograph of William E. Boeing with an unidentified man. One handwritten page and envelope.