The Department of Archives and Special Collections, of the Hannon Library, Loyola Marymount University, acquires, organizes, and opens to research, primary source materials in the arts, humanities, education, and religion.

Mount Saint Mary's University was founded by the Sisters of St. Joseph of Carondelet in 1925 as the first Catholic women's college west of the Mississippi. It comprises two historic sites, the Chalon Campus high above Brentwood (1930), and the Doheny Campus, which occupies the former estate of Edward and Estelle Doheny, including the Doheny Mansion at 8 Chester Place (1899).