The Mormon settlements in Arizona collection (1857-1986) consists of primary sources relating to the Mormon colonization efforts along the Little Colorado River and the surrounding area. The major part of the collection consists of materials collected by George S. Tanner. Included are photocopied or transcribed diaries, histories, correspondence, financial records, biographies and autobiographies, and clippings from and about the Arizona settlements.
The Lot Smith papers (1857-1962) contain correspondence relating to Church matters, Smith's family, military orders. There are also government documents and records of the Mormon Church High Council in Tuba City, Arizona, Utah Territory, and Little Colorado Settlements in Arizona.