Hamilton "Ham" Coolidge (1895-1918) was one of many young men from wealthy New England families who enlisted during World War I. The collection contains materials related to Captain Coolidge's service a pilot with the U.S. Army Air Service 94th Aero Squadron. Coolidge achieved Ace status, was awarded the Distinguished Service Cross, and was killed in action.

Three albums of World War I photographs depicting various squadrons and corps of the United States Air Service stationed along the French-German border during and after the war.

Wilbur D. Kennedy, 1893-1943, was born in Cedar Rapids, Iowa and served as a pilot in the 12th Aero Squadron during World War I. Collection contains photographs, correspondence, military records, and other assorted materials relating to his World War I service.

Marc Aloysius Lagen (1882-1946), originally from Dubuque, Iowa, was a theatrical manager who served as Captain in the Balloon Section of the U.S. Army Air Service during World War I. The collection contains documents, photographs, correspondence, and ephemera relating to his World War I career.

The Irwin Bryan Meyers Photograph Album is comprised of a photograph album and accompanying typescript document relating to Meyers' service as an airplane mechanic and the activities of the 88th Aero Squadron during and after World War I.

The Mark Winters Stereograph Collection contains forty-eight (48) stereograph images of World War I scenes printed by the Keystone View Company.

Stereoscopic photographs of scenes from World War I scenes.