Contains the research material, notes, photographs, and other material of Berrett, including research on Mormon Trail history, history of the Church of Jesus Christ of Latter-day Saints, and scrapbooks of tours conducted by LaMar C. Berrett. Dates range from 1931-2007.

Contains research papers and materials in Mormon history including bibliographies of Mormon Standard Works, journals from Church leaders, and magazine articles pertaining to Mormon history. Also includes articles and research materials from Mormon historians including Lester Bush, Jr. and Bruce R. McConkie. Materials dated between 1843-1991.

Contains the research of Berrett on Mormon history and various topics. The material includes hand-written notes of Berrett and various published and unpublished writings of Berrett and other authors regarding Mormon history. Dates range from 1931-2007.

Collection contains materials pertaining to or collected by LaMar Berrett. Includes minutes from meetings at Brigham Young University which Berrett attended between 1967-1969, primary and secondary source documents pertaining to his research in Mormon history, and materials pertaining to his career as a religion professor at BYU including syllabi, textbooks, and lesson plans. Materials dated between 1843-1991.