The B. Carmon Hardy papers consist of his writings and research materials regarding American history and Mormon polygamy. Hardy was a professor of history at California State University, Fullerton.

The Franklin S. Harris Jr. papers (1920s-1997) contain the personal, teaching, and research files of this noted Utah-born scientist. The collection contains much of his research on diffraction and the subject of optics in general. Also present are materials relating to the Church of Jesus Christ of Latter-day Saints and the relationship between science and religion.

The Trent Harris papers (1960s-2020) contain his original screenplays, research, correspondence, and ephemera. There are also screenplays by other writers. Trent Harris is a Utah documentarian and independant film maker, whose projects include the famous Beaver Trilogy, Rubin and Ed, and the cult classic Plan 10 from Outer Space.

The Conrad B. Harrison papers (1913-1980s) consist of materials realting to the Salt Lake International Airport Expansion Project, the Utah State Symphony Orchestra, Salt Lake City Government, and community programs.

The Thomas J. Harvey papers (1915-2002) contain research files related to Zane Grey, John Ford, and Monument Valley, including photocopies, correspondence, shooting schedules, interviews, newsclippings, brochures, and pamphlets.

The Floyd Garn Hatch papers (1941-1996) consist of materials related to fraternities at the University of Utah; business records of the Utah Law Review and copies of articles submitted for opublication in the review.

The Hatch River Expeditions records contain correspondence, logs, employment records and oral histories from the Hatch family. Robert Rafael "Bus" Hatch and his brothers, Alton and Tom, began boating in the Vernal, Utah area in the late 1920s and formed Hatch River Expeditions, one of the best known river outfitters in the western United States.

This collection consists of photocopied transcriptions of letters between Charlie Haynes and his wife, Jennie, while Charlie worked on an 1871 cattle drive from Texas to Kansas.

The Christopher C. Heaton letter (1924) to David O. McKay, then President of the Church of Jesus Christ of Latter-day Saints (LDS Church), reports on the character and labors of Richard M. Burgoyne.

The Ernest Hemingway letter consist of one undated letter from Hemingway to Gordon W. Kirby of Salt Lake City, Utah. The letter instructs Kirby to send Hemingway some books, care of Scribners New York, for him to autograph.

The William Williams Henderson papers (1877-1944) consist of the professional papers of William Henderson (1879-1944), a former department head of zoology and entomology at the Utah State Agricultural College. Included are course materials, articles by Henderson, correspondence, notes, a student thesis, and other papers.

The Harvey Herbert letter to Frank Hodges (1913), written on Utah State Prison letterhead, requests help to sell a bridle made out of kangaroo leather presumably made by the writer and prisoner, Herbert.

The Donna Hill papers (1803-2002) contain Hill's biographical information, correspondence, art work, book reviews, and assorted materials concerning the Joseph Smith biography. Donna Hill was a university librarian, a painter, a writer of children's books and the author of a study on the life of Joseph Smith.

The Eugene Hilton papers (1867-1989) contain talks, papers, correspondence, journals, day books, and manuscripts pertaining to the life and career of Eugene Hilton (b. 1889) and his immediate family.

The Adolf Hitler Christmas card (1938) is signed by Adolf Hitler in December 1938. The caption reads: Herzliche Glucknunsche zum Weihnachtsfest und zum Fahresnechsel. This folder contains a photocopied version for access purposes. Access to the original must be given by the Manuscripts Curator and by appointment. An archivist must remain with the item if being used.