Abstract The Avery C. Gilleo collection includes letters written by him while serving in the Michigan National Guard, 126th Infantry (63rd Brigade, 32nd Division, Company K) during World War I. The letters were written to his fiancee Eleanore Alten, the daughter of painter Mathais Alten. The collection also includes a portable letter writing kit that Gilleo used while in service and a pocket compass-mirror combo. In the letters Gilleo describes his duties as an officer, social issues and plans for...