Note to William E. Boeing from Western Union Telegraph Company, July 11, 1916. States that a July 11, 1916 telegram to G. C. Westervelt was undeliverable. One typed page.
Postcard addressed to Herrn M. Cremer, Bremen, Germany, September 11, 1930. Sent via air mail aboard the Graf Zeppelin from Russia. Stamped on front of postcard: "Mit Luftschiff Graf Zeppelin, Moskau - Friedrichshafen."
Postcard to William E. Boeing from the Finleys, September 25, 1928. Sends thanks for the photograph and describes a unique globe he has in his office [replicated on postcard]. Also includes a second postcard with a poem about aviation.
Postcard to William E. Boeing from the Praegers, August 30, 1931. States that they are leaving Singapore and includes a list of addresses for mail as they travel.