Founded in 1952, the ONE Archives at the University of Southern California Libraries in Los Angeles is the oldest continuously-operating LGBTQ organization in the United States and the largest archive in the world dedicated to collecting and preserving LGBTQ materials. Our collection comprises over 33,000 volumes of books and monographs; over 13,000 titles of LGBTQ periodicals; 700 manuscript and…

Collection dates prior to separation from Los Angeles County (1889)to present. Bulk of collection dates from 1889 to 1953 and is Orange County specific.

The Orange County Historical Society (OCHS) is a non-profit group which collects, preserves and shares the history of Orange County, California for the benefit of its members and the general public.

Founded in 1956, the Orange Empire Railway Museum preserves the railway history of Los Angeles and Southern California. In addition to its large collection of full size railway cars and locomotives, its archives contains extensive materials on the Los Angeles Railway and Pacific Electric Railway, as well as the mainline railroads that served Southern California.

Outfest's collection is based on sixteen years of presenting films and videos about the gay and lesbian community. Although much of the collection is not Los Angeles-based, Los Angeles is referenced a great deal. The collection contains approximately five hundred titles.