Contains papers regarding his profession and church service. Includes materials related to missions he served as the president of, his service with the Institute program, his work at Brigham Young University, and other papers regarding his career.

Contains correspondence, notes, and other materials related to civic and business activities by Sessions. Materials date from between 1949 and 1965.

Contains correspondence, notes, and other materials related to his service with the Institutes of Religion.

Contains research files on the numerous offshoots of Mormonism, including a list of groups and their leaders, questionnaire, scriptural warnings, articles and periodicals, correspondence, files on each group, printed literature of the various groups, and other materials.

Contains correspondence, pamphlets, and a sound recording related to Rich's missionary service and other activities. Materials date from between approximately 1955 and 1984.

Contains general files related to Rich's teaching career at Brigham Young University. Includes minutes, correspondence, student papers, class notes, talks, and other items. Materials date from between approximately 1951 and 1984.

Contains research, chapter drafts, and other materials used in the production of Rich's book Ensign to the Nations (1972). Dates from between 1966 and 1972.