The Church of the Firstborn of the Fulness of Times is a Church of Jesus Christ of Latter-day Saints fundamentalist sect headquartered in northern Mexico that was founded in 1955 by Joel LeBaron and members of his family. This letter (1963) is a photocopy of a circular letter signed by Verlan M. LeBaron proposing peace with the faction of the church under the leadership of Ervil M. LeBaron which it accuses of being responsible for murder and arson.

The Far West record (1833-1844) is a microfilm reel containing information on the Far West Stake of the Church of Jesus Christ of Latter-day Saints.

Scott Harry Faulring (1956-2018) was a Brigham Young University professor and researchers into the history of the Church of Jesus Christ of Latter-Day Daints. This collection contains photographs, slides, and negatives documenting Faulring's career as a researcher and in the United States Airforce, as well as images of Faulring's family and travels.

The R. Kent Fielding papers (1840-1998) consist of Fielding's writings and the research materials he gathered for them. The collection reflects his interest in the history of the LDS Church, the Mountain Meadows Massacre, and his transition from being a member of the LDS Church to being a secular humanist.

The Stanley S. Ivins papers (1850-1968) consist of correspondence, a diary, articles, and eleven microfim reels which contain research notebooks and transcripts of Salt Lake City newspapers.

The journal history of the Church of Jesus Christ of Latter-day Saints (1830-1972) contains diaries, letters, newspapers, and sermons on 304 reels of microfilm. The Church Historian's Office compiled a 1200-volume chronological scrapbook using diaries, letters, newspapers, sermons, and other materials.

The Heber Chase Kimball papers [microform] (1837-1914) contain diaries, histories, correspondence, and an inventory of the effects of Heber C. Kimball. Kimball was an early Mormon apostle and good friend of Brigham Young.

The Stanley Buchholz Kimball papers (1844-2003) contain documents pertaining to Kimball's research on the LDS Church and the Kimball family, as well as his interest in Eastern European history.

Stanley Buchholz Kimball (1926 –2003) was a historian of Central European History and the history of The Church of Jesus Christ of Latter-Day Saints. The Stanley Buchholz Kimball photograph collection contains slides and negatives documenting Kimball's life and his research.

The Kirtland Council minute book (1832-1837) is a copy of a microfilmed typescript consisting of meeting minutes of the Kirtland high council.