This collection consists of slides of the photographs of John Wengatz. Most of the photos are from the later part of John's life, and the majority of the photos are in color. The collection contains approximately 340 photographs of different mission projects in Africa, and about 360 pictures of vacations to South Carolina, England, Belgium, and Portugal, as well as John's home in the United States.

This collection is made up of the administrative material from the Board of Missions. It also includes the records of the World Mission Division, the Division of Home Missions and Church Extension and its various departments and mission fields, the National Missions Division and the Mission Advance Program. The collection is made up of six series. Although there is some material from 1862 and the 1970's, the bulk of the material is from 1946 to 1968.

The Evangelical United Brethren Church is one of the predecessor denominations of The United Methodist Church. This collection is made up of the administrative material from the Women's Society of World Service. It also includes the records from the Local Branches, Quadrennial Conventions, World Evangel, Literature Department and the Society's area's of emphasis Christian Social Relations. Missionary Education, Missionary Education for children and Youth, and Spiritual Life. The collection is made up of nine series.

The Robert Thomas Parsons Collection contains both a complete copy and a partial copy of Parsons' Ph.D. dissertation from the Kennedy School of Missions of the Hartford Seminary Foundation. The first folder contains biographical data and a photograph of Parsons from a collection of his papers at Hartford Theological Seminary. A complete manuscript of the thesis, titled "The Function of Religion in an African Society", is collected in two volumes. A partial collection of the thesis containing sections III, IV, V, VI, and VII is collected in two volumes and marked with a logo from the Department of World Missions of the Evangelical United Brethren Church.