Abstract The Bennion family papers (1844-1949) include the diaries of John Bennion (1820-1877), Heber Bennion (1858-1932), and Mary Bennion Powell (born 1890), as well as family correspondence and autobiographical sketches. John and Samuel Bennion and John's son, Heber, were Utah sheep ranchers and polygamists, while Mary Bennion Powell was a daughter of Heber Bennion.

Abstract The Mary Bennion Powell Muhs papers (1972-1973) contain letters from Muhs a former student to Sterling M. McMurrin, dean of the Graduate School at the University of Utah, asking McMurrin to preserve the story of her father's polygamous marriage after the turn of the 20th century and its effect on her family. Includes a photocopied holograph and a typescript of the incomplete work titled "A Utah Idyll."