Bethel University houses three archives related to the library.
The Otis Bowen Museum and Archives is the repository for the materials of Gov. Otis Bowen. Gov. Bowen was governor of Indiana in 1970s, and served as the Secretary for Health & Human Services under the Reagan administration. The museum and archives are available on an appointment basis, through Clyde Root.
The Bethel University Archives is the repository for materials related to Bethel. It is located in the basement of the Bowen Library, and the curator is Kevin Blowers.
The archives of the Missionary Church, as the memory center for records of historical significance, is a collection of the official papers of the denomination as well as materials relating to its origin and development. Its task is to organize and preserve these materials so they may be a valuable resource for reference and research.