The H. Byron Mock papers (1881-2004) consist of personal and business materials. Mock served for a number of years in the Bureau of Land Management as Director of the Colorado-Utah Region, as a member of the Public Land Law Review, and also had a private legal firm. The majority of his work deals with mining and grazing rights in the West.

The William James Monroe scrapbooks (1947-1991) consists of three volumes containing correspondence, a list of Utah architects, photographs, and news clippings. correspondence, a list of Utah architects, and news clippings relating to William James Monroe's architectural practice in Salt Lake City. Monroe was an architect in Salt Lake City, Utah who practiced from 1946 to 1970.

The Charles H. Monson papers (1924-1981) reflect the academic and teaching career of Charles H. Monson Jr. (1924-1974), a well-known authority on the subject of philosophy. Included are correspondence, day books, resumes, news articles, lecture notes and outlines, essays, reports, pamphlets, programs, and manuscripts for published writings, among other papers.

The Montana Uinta Hydrocarbon Company correspondence (1906) is between B. B. Haywood of Salt Lake City, Utah, and James A. Flint of Pony, Montana, concerning elaterite and asphaltum claims in Utah.

The Harold Moore papers (1966-1973) consist of correspondence with writers in regards to the University of Utah's annual Writers' Conferences and other documents including announcements of the Writers' Conference (1966-1973). Moore was a professor of English at the University of Utah (1958-1992) and director of the University of Utah Writers' Conference.

The Loren E. Morey papers (1826-1983) contain correspondence, notes, articles, publications, notebooks, pamphlets, brochures, and news clippings related to hot air balloons and rocket systems. Loren E. Morey received a Ph.D in chemistry from Columbia University in 1944. He worked for Hercules Powder Company for twenty-five years beginning in 1950. While at Hercules, he participated in the development of several military rockets including the Nike Ajax, Little John, Terrier, and Talos.

The John Hamilton Morgan papers (1845-1986) detail the personal, professional, and religious activities of John Morgan (1842-1894), a noted Utah educator and Church of Jesus Christ of Latter-Day Saints (LDS) leader. Click here to view the digitized collection.

The Nicholas Groesbeck Morgan papers (1885-1997) consist of archaeological and historical materials pertaining to Utah and United States. The bulk of this collection is devoted to notable Utah/Mormon personalities and figures as well as buildings, places, etc. that are held in historical reverence concerning pioneering and the Salt Lake area.

The Mormon historians and historiography collection (1981-1984) consists of copies of articles written by LDS historians debating whether or not written LDS history should be "faith-promoting" or "objective."

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.

The A. Russell Mortensen papers (1830-1996) consist of the personal and professional papers of Mortensen (b. 1911), a teacher, administrator, and editor. Included are correspondence, reports, manuscripts, articles, and materials resulting from Mortensen's years as editor of American West magazine.

The Sylvester Mowry papers (1855) contain two letters detailing his experiences in the United States Army, in the year 1855. The collection also contains transcripts of the correspondence, and a short biography of Mowry (1832 or 1833-1871).

The Mt. Nebo Sugar Beet and Land Company letter (circa 1898) details the undertakings of the company for the erection of a new sugar factory in Utah's Mt. Nebo area.

The Mary Bennion Powell Muhs papers (1972-1973) contain letters from Muhs a former student to Sterling M. McMurrin, dean of the Graduate School at the University of Utah, asking McMurrin to preserve the story of her father's polygamous marriage after the turn of the 20th century and its effect on her family. Includes a photocopied holograph and a typescript of the incomplete work titled "A Utah Idyll."