Since its founding in 1979, the mission of California Social Welfare Archives (CSWA) is to collect and preserve documents and personal histories that illuminate the development of social issues and problems in the field of health, social work and social welfare in California, as well as the answers that have emerged to cope with such problems.

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 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.