Collection includes materials related southern California tourism, the Mission Revival movement, peace movement (1st half 20th century, citrus industry, and materials related to specific collections,including fine art, statuary, bells, crosses, dolls, aviation, Native American basketry, and Asian arts.

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).

The Whittier History Room is located on the mezzanine of the Central Library and is home to the Whittier Local History Collection. The purpose of this collection is to collect, preserve and make available to the public materials reflecting the development of the City of Whittier and surrounding areas. The main areas of collection are Whittier history, Whittier Hills and California history. The…