- Chinese Historical Society of Southern California - Documents the local history of Chinese settlers and immigrants. Includes calendar of events, meetings, and membership information. Publications include the annual, semi-academic, Gum Saan Journal. Operates the Chinatown Heritage and Visitors Center in Los Angeles.
- Historical Society of Southern California - Information and activities related to the history of Los Angeles and southern California. Includes biographies of well-known historical figures, chronology from 1500 to 1992, and links to related sites.
- Internet Archive: An Illustrated History of Southern California - The Lewis Publishing Company, 1890. Historical survey organized by county and city. Includes biographical sketches of key persons.
- Jewish Historical Society of Southern California - Preserving and interpreting the Jewish experience in Southern California. Membership application and list of publications.
