This collection documents Newcomer's experiences in Civilian Public Service camps as a conscientious objector during World War II. Materials include ration books, camp rosters, photographs, miscellaneous correspondence, and a memoir of his experiences.

The collection also documents Newcomer's interest in the history of Mennonites in northern Indiana, specifically the Yellow Creek Mennonite Church. They include photographs, estate sale bills, and photocopied documents related to Yellow Creek members who were conscientious objectors during World War I.