The California Historical Society collects materials of enduring historical and cultural value in support of its mission to inspire and empower Californians to make the past a meaningful part of their contemporary lives. In our North Baker Research Library, we hold some fifty thousand books and pamphlets, four thousand manuscript collections, half a million photographs, as well as ephemera,…

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 California Institute of Technology Archives and Special Collections, founded in 1968, has a mission of facilitating understanding of Caltech’s role in the history of science and technology. Our collections include the papers of Caltech researchers; photographs, film, audio, video, websites, and publications documenting Caltech’s history; scientific instruments characteristic of research at…