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.

This collection contains mostly administrative records from Williams' work in missions administration. Included are Williams' reports on his trips overseas; personnel application procedures and personnel development procedures; papers and reports by other authors on missiology and missions theory; a history of the Joint Committee on Missionary Personnel: clippings, books, pamphlets, and reports on several geographic regions, especially China.

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.