The Mitchell H. Kline papers (circa 1950s-1970s) consist mainly of mechanical engineering and mining records, although some of Kline's personal materials are also present.

The Arthur and Emma Krause papers (1911-1980) contain a poetry book, maps, a scrapbook, and a health book. Arthur and Emma Krause were German members of the Church of Jesus Christ of Latter-day Saints who emigrated to the United States in 1953. Arthur Krause served in the German army during World War II and spent two years in a Russian prisoner of war camp. Emma Krause fled Breslau ahead of the advancing Red Army.

The Naomi Barlow Larson autobiography (2010) is entitled The Poet's Wife. Larson discusses her personal history along with biographical sketches of her parents, Elbert Henry Barlow and Alice Alberta Sweeten Barlow.

The William "Bill" Gustave Larson papers (1890-1995) consist of correspondence, certificates, awards, news clippings and other materials. The collection also contains materials regarding Charles G. Larson and writings by others. Larson was a member of the Utah House of Representatives and was instrumental in the organization of the Metro Salt Lake Committee on Aging.

The Genevieve Lawrence papers (1944-1989) contain correspondence, sales information, artist cards, and gallery programs. Correspondents include Alice Merrill Horne and Ray Nilson's Fine Arts Gallery. Concerns art galleries, Utah Women artists, interior design and the 1955-1957 Utah State Fairs. Also includes organization records of the American Association of University Women. Genevieve Lawrence was a owner of Lugen Galleries and an art collector.

The Henry W. Lawrence papers (circa 1924) consist of estate papers, an obituary, a biographical sketch, genealogical records, and an appendix to an unpublished thesis titled "Populism in Utah."

The Francis Lee family historical accounts (1925, 1960) consist of one by Lucille Butler Roberts and the other by Elizabeth Lee Butler. The first is about the settlement of Panaca and Pioche, Nevada. The second about the Francis Lee family settlement in Meadow Wash Valley.

The Thomas A. Leishman papers (1887-1998) contain his mission diary and various personal and biographical documents. Leishman was born in Scotland and emigrated to Utah in 1852. He helped lay out the city of Wellsville, Utah, and assisted in the construction of every public building in the community. He later served an LDS mission to England and Scotland form 1887 to 1889.

The Eliza Lowe biography consist of a brief history of Eliza Lowe and her husband, Thomas, compiled by their granddaughter, Mary Belnap Lowe.

The John Lowry Sr. and John Lowry Jr. biographies of both these early settlers to Utah are undated.

The Albert Robison Lyman 27-page booklet (1997) focuses on Edward Partridge's conversion to the Church of Jesus Christ of Latter-day Saints in 1830 and his subsequent activities as a church leader. Included are copies of letters written by Edward Partridge and of a patriarchal blessing given to him by Joseph Smith.

The Dennis L. Lythgoe papers (1977-2008) consist of correspondence, column manuscripts, personal materials, and newspaper clippings of the columnist and professor of history.

The Betty M. Madsen papers (1938-1997) contains journals, professional correspondence, unpublished manuscripts on linguistics and 19th-century women, and news clippings on women's issues in the 1970s and 1980s. Betty M. Madsen was a graduate of the University of Utah with degrees in French and linguistics. She was the co-author of several publications with her husband, Brigham D. Madsen and served as thesis editor at the University of Utah in the 1970s.

The H. Franklin and Florence Jepperson Madsen papers (1904-1977) consist of family history and biographical materials, musical performance programs, BYU music department booklets, sheet music, and news clippings pertaining to the lives and careers of Drs. Madsen.

The Steven K. Madsen collection on Blacks in Utah (1879-1980) contains photocopied materials about early African Americans in Utah, especially about Green Flake and the community of Union. Included are clippings and book excerpts related to Green Flake, property records for Union, records of Union Fort Cemetery, and reminiscences by relatives of Green Flake. Also included are clippings and other materials on Black people in the LDS Church (1965-1979).

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 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 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.