Correspondence, 1958 -1978 including but not limited to: Gladdys Muir's retirement, Peace Studies News-Letters from Gladdys Muir with handwritten notes, Memo from MC Treasurer regarding Gladdys Muir's library and retirement matters, the effect that a resignation would have on the Peace Studies program, Deeter's doctoral thesis, Conflict Resolution proposal, discussions with Professor William Schuhle, Ken Brown, Grady Snyder, Donald E. Miller, Dale Aukerman, and Linda Rehfeldt.

Materials related to: Council for Intercultural Studies and Programs, Fellowship of Reconciliation, Environmental Studies at Manchester, Brethren Volunteer Service, India 1973, 1978, India Delegation, 1975-1976, On Earth Peace, Testimony to Senate Subcommittee on Education - United States Peace Academy, On Earth Peace Academy, 1975-1976, World Without War Council, 1976. Deeter syllabi, papers, and Brethren Heritage materials.