The California State Library, comprising sections including California History, Information Services, Government Publications, and the Witkin Law Library in Sacramento and the Sutro Library in San Francisco, holds a wide variety of materials relating to the history of Los Angeles, including manuscripts, rare books, maps, photographs and other visual resources, ephemera, vertical files, and more. …

The Metropolitan Water District of Southern California manages a library and archival repository documenting the activities of the organization and resources of interest to the greater history of the Los Angeles region. 

Gregor Piatigorsky, the great master cellist of the 20th century, left a legacy of great music through his concerts, recordings, and films, and through his students. He also left a personal collection of approximately 19,000 items including photographs, music manuscripts, correspondence, concert programs, clippings, test pressings, commercial recordings, books, and ephemera. After his death in…

The Yosemite Archives contain historical records and manuscripts related to Yosemite's history, including the donated papers of ethnographers and scientists, resource management records, historic park administrative records, and slide, photo, and film collections.