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.

The Water Resources Center Archives (WRCA) is a unique library that collects archival materials on all aspects of water resources in California and the West. WRCA manages over 125 collections with several significant collections that pertain to water development in southern California. These collections include Franks Adams, Harry F. Blaney, John D. Galloway, Walter L. Huber, Oman J. Lillevang,…

The Wende Museum collects artworks, artifacts, and personal histories that record daily life, creative expression, and political developments in Eastern Europe and the Soviet Union during the Cold War period. The collection comprises a variety of media including design objects, works on paper, ceramics, paintings, sculptures, posters, furniture, textiles, photographs, films, videos, sound…