The Oliver Cowdrey correspondence [photocopies and typecripts] consist of forty-six letters written by Cowdrey, during 1833-1838, for himself or for others. Oliver Cowdrey (1806-1850) was one of six original members of the Church of Christ, later called the Church Jesus Christ of Latter-day Saints and was a scribe to Joseph Smith.

The H. Michael Marquardt papers (1800-2017) contains correspondence, clippings, diary copies, scholarly articles, miscellaneous research materials on topics in LDS history and theology. Marquardt is a historian and author.

The James D. Still Mormon history collection (1834-2010) contains articles, clippings, correspondence, an index, and other research materials on Mormon history, particularly Oliver Cowdery, the writing of the Book of Mormon and the Book of Abraham, and the relationship between Masonry and the LDS Church.