The Vinzenz Thum diary (1919-1922) is handwritten and was kept while on a mission for the LDS Church in Canada and eastern United States.

The Albert King Thurber papers (1822-1877) contain transcripts of his autobiography and a partial diary. Thurber was convert to the LDS Church. He served several missions, including one to England in 1865. He was also a member of the Utah legislature, and later served as a delegate to the legislature.

The Eva Lewis Tiemersma papers (1922-1924) consist of a diary (1922-1924), mission letters, and memorabilia from an LDS mission to the Eastern United States.

The Calvin D. Tolman papers (1961-1983) consist of correspondence and papers written by Tolman and others on the subject of geography described by the Book of Mormon (BOM).

The Helon Henry Tracy papers (1875-1889) contain diaries, journals, bookkeeping ledgers, prison inmate rosters, articles, research materials, and newspaper court reports. Tracy was a member of the Church of Jesus Christ of Latter-day Saints imprisoned for polygamy in Utah in 1886.

This collection contains a transcript of the reminiscences and diary of Mary Elizabeth Rollins Lightner which records her experiences with the Church in Kirtland, Ohio, Missouri, Illinois, and Utah, and her association with Joseph Smith. A photocopy of a letter written by Emmeline B. Wells in 1889 is also included in the collection.

The John L. Traughber photograph consists of one color photocopy of a photograph of the Traughber family.

The Cary Trivanovich essay is entitled "Why I left the Mormon Church: The Seven Major Reasons Why the Church Cannot Be True."

The Thomas G. Truitt essay (1974) is entitled "Beliefs, Attitudes, and Actions toward the Constitutional Government of the United States by the Church of Jesus Christ of Latter-day Saints, 1830-1900." He worked as a reference specialist in the Church of Jesus Christ of Latter-day Saints (LDS) Historical Department Library.

The Shirley E. Blackmer and R. Lloyd Tyler family papers (1902-2013) consist of correspondence, scrapbooks, genealogical records, journals, and other documents. Shirley and R. Lloyd Tyler were devout members of the LDS Church and were also business owners of a store located in Walla Walla, Washington. Items of interest include the correspondence and scrapbook regarding R. Lloyd's experiences during World War II.

The James W. Ure papers (1929-2003) consist of Ure's research material for his book, Leaving the Fold: Candid Conversations with Inactive Mormons and Hawks and Roses.

The Utah history stereographs photograph collection contains stereographs of historica early Utah buildings and people, with a focus on Mormon leaders and buildings.

The Bruce A. Van Orden papers (1981-1993) consist mainly of articles by Van Orden on subjects such as W.W. Phelps, celestial marriage, Brigham Young, hymns, Joseph Smith Jr., and scripture. Family history records and other personal information are also included.

The Dorothy Shepherd Van Stipriaan papers (1876-1984) consist of personal and family materials. Included are handbills, artwork, announcements, flyers, poetry, religious materials, and Dorothy's unpublished master's thesis. Dorothy Van Stipriaan (1909-1976) was a member of Salt Lake City's prominent Shepherd family. She was appointed head of the library's Fine Arts Department in 1966.

The Richard S. Van Wagoner papers (1797-2008) contain a record of Van Wagoner's historical research and writing. Correspondence and other papers are also included. Richard Van Wagoner is a clinical audiologist and Utah LDS historian and author.