The Robert Marsham diary (1864-1865) consists of a photocopy of the original diary. Marsham was a well-known explorer, and in this diary he describes his travels in Northern California, British Columbia, Yosemite, Idaho, Utah, the Sandwich Islands, and the Far East. Access to original diary restricted except with permission of the Manuscripts Curator.

The G. Stanley McAllister papers (1920-2006) contains copies of typed and handwritten diaries, letters, and biographical information, most of which were written by McAllister during the time he served in the Eastern States mission for The Church of Jesus Christ of Latter-day Saints (LDS Church). McAllister was a New York City merchandising executive.

The Joseph H. McGee diary (1887) speaks of his family moving to Missouri in 1837, and of several experiences with Joseph Smith and the members of the Church of Jesus Christ of Latter-day Saints.

The Maxine Olive Ward McIntyre papers (1929-2014) contains personal materials including schoolwork and community service records, teaching certificates and awards, a biography, and a set of journal entries. McIntyre was a pioneer in teaching.

The John E. McKendrick papers (1942-1958) contain McKendrick's wartime diary, research materials and linguistic notebbooks. McKendrick was a professor of English at Brigham Young University.

The David McKenzie papers (1860-1962) include early programs, playbills, tickets, scripts, librettos, and other materials related to the Salt Lake Theater, as well as some personal papers of David McKenzie (1833-1912), manager of the theater.

The William Athole Macmaster diaries [photocopies] (1851-1869) detail McMaster's early life, conversion to the LDS Church, his LDS mission experiences, and his family's move to Salt Lake City, Utah. William McMaster (1816-1887) was an early Mormon convert in Scotland.

The Madeline R. McQuown papers (1803-1976) contain some of McQuown's research and works. While the collection does contain some of McQuown's more personal works, such as some of her poetry, the collection deals mainly with her research. Her research was focused on Brigham Young and the history of the Church of Jesus Christ of Latter-day Saints (the LDS Church).

The collection consists of a transcription of the diary of an LDS missionary to Hawaii 1881-1884. Includes detailed notes on the trip to San Francisco, the steam voyage to the Islands, and activities in Hawaii. Original may be incomplete; does not include return trip.

The Marriner Wood Merrill diary [typescript] (1886-1890) documents daily activties, in particular, expenditures.

The Taylor H. Merrill diary and scrapbook (1926-1928) document Merrill's mission to the Southern United States for the LDS Church.

The Joseph H. Michell diary (1897-1899) is a photocopy of Mitchell's LDS mission journal from Great Britain. Mitchell joined the LDS Church in 1882. He later served as a missionary in Scotland from 1897 to 1899.

The Hack Miller papers (1937-1996) contain newspaper articles, magazine stories, trip diaries, office files, and correspondence pertaining to the career of this Utah journalist.

The James F. Milligan diaries (1846-1854) consist of two volumes written by Milligan. The first is his account of life aboard the Albany, a U.S. sloop of war, while the second concerns his experiences during Fremont's fifth expedition in 1854. James F. Milligan was a Navy midshipman, a Confederate signalman, a newspaper correspondent, and a member of Charles Frémont's 1854 expedition.

The Mormon businessman in Salt Lake City diaries (1877-1878) were written by an un-named young man who is a banker/businessman in Salt Lake City.

The Mormon missionary in Wisconsin diary and letter (1855) tells of meetings, funerals, conferences, and tells of working with Bishops in Wisconsin.

The Mormon settlements in Arizona collection (1857-1986) consists of primary sources relating to the Church of Jesus Christ of Latter-day Saints' colonization efforts along the Little Colorado River and the surrounding area. The major part of the collection consists of materials collected by George S. Tanner. Included are photocopied or transcribed diaries, histories, correspondence, financial records, biographies and autobiographies, and clippings from and about the Arizona settlements.