Sauer's correspondence, and the manuscript and supporting documents for his unpublished "Methodists in Korea," make up the bulk of the collection. These materials document Methodist Episcopal mission work during Sauer's tenure in Korea, including the evacuation of missionary personnel in 1940, and their return in 1945. This was a critical transition phase for the Korean Methodist Church (KMC) as they struggled for power and control during the heightened Japanese control over churches in Korea, and then rebuilt after the war. There is also considerable material covering state of missions and the KMC during the invasion of South Korea in 1950. Photographs and publications nicely supplement this part of the collection.

This collection is made up of administrative material from the Foreign Missionary Society and its various mission fields. It also includes material regarding the 1898 Sierra Leone massacre of missionaries and the trial of Daniel F. Wilberforce for cannibalism.

This collection is made up of records of the various agencies of the church. It also includes material regarding local churches and annual conferences. The collection is made up of fourteen series. The four largest series which make up the bulk of the collection are the Woman's Missionary Society, Missionary Society, Annual Conferences, and Sunday School and Tract Union.

This collection is made up of records of the various agencies of the church. It also includes material regarding local churches and annual conferences. The collection is made up of thirteen series. The three largest series which make up the bulk of the collection are the Missionary Society, the Woman's Missionary Society, and the Board of Christian Education.

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.