The Automobile Club of Southern California was founded in 1900, and the records of its undertakings provide a distinctive picture of life in the region during the twentieth century. The documents and pictorial materials in the club’s archive relate not only to the club’s history but also to local and regional architecture, infrastructure, public policy making, and cultural and recreational…

Collections include pamphlets and ephemera documenting the growth, industries, transportation, and social organizations of Los Angeles and greater southern California; photograph collections; thousands of books related to southern California; and numerous archival collections related to indiviuals, the citrus industry, and businesses in the Inland Empire.

The Yosemite Archives contain historical records and manuscripts related to Yosemite's history, including the donated papers of ethnographers and scientists, resource management records, historic park administrative records, and slide, photo, and film collections.