The Chinese Historical Society of Southern California was founded in1975 to discover and recognize Chinese American pioneers and the history of Chinese Americans in Southern California. It also works to increase aware-ness of Chinese American heritage through public programs, education, and research. The society's holdings focus on Southern California Chinese American history.

The Downey Historical Society is located at the Downey History Center in Apollo Park. For more than thirty years, the society's all-volunteer staff has been gathering and preserving records and artifacts from and about the southeastern part of Los Angeles County. The society's collection includes original photographs from 1870 to the present (copy negatives, duplicate prints, or 35-mm slides are…

Documents and photos relating to the history of the Crescenta Valley. The La Crescenta Valley Historical Society has a lot of materials on the New Years Flood of 1934, and the town of Montrose, plus some materials on the American portrait artist S. Seymour Thomas.

Little Tokyo Historical Society commemorates the Japanese American history and heritage related to Little Tokyo in Los Angeles through archival collections, photos, videos, gallery exhibits, lectures, and workshops. "Los Angeles's Little Tokyo (Arcadia Publishing, November 2011). "Little Tokyo: The 1930's Golden Years", 2013 calendar now on sale at www.littletokyohs.org.

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.