The Zilla Linford Richards papers (1914-2000) contain correspondence, diaries, day planners, financial records, drawings, and newspapers. Both personal and business finances are included, although most financial documents are in relationship to Lark Instruments, the business belonging to Lorenzo A. Richards (Zilla's husband).

The Edith Leroy Richardson papers (1883-1971) is comprised of two scrapbooks, nursing certificates, and other documents pertaining to and/or collected by Richardson (1881-1977), a professional nurse who was also a granddaughter of Chief Tintic of the Uintah Utes.

The Bruce Roberts papers (1966-2004) contains documents and advertisements relating to Roberts' work as a journalist, co-founder of the Cosmic Aeroplane Bookstore, concert promoter and activist. The collection also includes underground newspapers collected during the 1960s and 1970s.

The Oliver Lee Robinson diary (1854-1858) is a photocopy of Robinson's journal. In addition to a family record, the journal contains the activites of Robinson as a settler in Utah with an account of an Indian attack on Fort Limhi in Idaho, February 1857. The journal closes with the arrival of Johnston's army in Utah, July 1858.

The William Robinson family papers (circa 1880-1931) consist of photocopied transcript and manuscript diaries and autobiographies; genealogies of the Robinson family of Beaver, Utah, and a related Turner family.

The Andrew L. Rogers diary is a photocopy of the original dating from 1882 to 1896. Andrew served as a missionary for the Church of Jesus Christ of Latter-day Saints in Arizona in 1876 and in Great Britain in 1910. Andrew died in 1943. The 288-page copy of the journal contains stories from Andrew's life, family history, and day-to-day accounts.

The Miles Pratt Romney papers (1881-1984) consist of diaries, newspaper clippings, certificates, typescripts of autobiographies and biographies, day books, note cards, correspondence, a published book and oral histories pertaining to the family of Miles Pratt Romney.

The Kenneth Irving Ross papers (1893-2014) consists of materials regarding his explorations of the Southwest as well as his time as the director of Explorers' Camp.

The Mathew Rowan papers [photocopies] (1853-1864) consist of the Rowan family history and a journal, both written by Mathew Rowan while serving a mission in England for the Church of Jesus Christ of Latter-day Saints. Rowan began writing the family history, and his journal, shortly after his 1853 marriage to Jane Martin in Worcester, England. Together the two documents document his activities as a private citizen and as an official for the LDS church in England and Utah.

The W. L. "Bud" Rusho papers (1605-2011) consist of journals, correspondence, articles, book reviews, interviews, manuscripts, poems, newspaper clippings, motion picture scripts, lectures, maps, papers, reports, memos, diaries, documents, minutes, videotape materials, and assorted publications.

The George B. Sanderson journal (1846-1847) was written by Sanderson who was a doctor assigned by the U.S. Army to accompany the Mormon Battalion on the 2000 mile march from Missouri down the Santa Fe Trail and ultimately to California. The Mormon Battalion was initially under the command of Col. Allen, and after his death was under the command of Phillip St. George Cooke. Included in the collection is a typescript (1995) version of the journal.

The Susan Barbara Tallmon Sargent papers (1891-1973) consist of correspondence, journals, news clippings, reports, articles, guest books, and financial documents collected by Sargent's niece, Ardis Hitchcock, who was planning on writing a biography of Sargent, a medical missionary to China.

The Dorothea R. Sauer papers (1909-1957) contain a diary, two postcards and photocopies of photographs. The diary has the year 1906 embossed on the cover, however the entries are from 1909.

The Levi Savage Jr. diaries (1877-1903) consist of bound and unbound typescript copies of Savage's diaries. Levi Savage Jr. (1820-1910) was an early Mormon settler to Utah who led and survived the journey of the ill-fated Willie handcart company.

This collection consists of items donated by World War II veterans in conjunction with their oral history interviews conducted by the American West Center. This collection is ongoing, and items will be added periodically.

The John Scott papers (1855-1856) consist of a photocopy and typescript of Scott's diary. A biography and some miscellaneous paper are also included.

The Antoine de Seynes papers (1938) contain materials documenting a French expedition kayak trip down the Colorado River. Included are correspondence, journals, articles, and a poem. Most of the materials are in French.