Primary sources are first-hand accounts of an event or time in history that has yet to be interpreted by another person.
Examples of primary sources include:
The Online Archive of California (OAC) is a searchable database that includes finding aids for archival and primary source collections at more than 200 libraries, special collections, archives, historical societies, and museums in California, including Special Collections & Archives in the Oviatt at CSUN.
After searching, you can limit your search results by holding institution, so you can see everything on your topic at other repositories in Los Angeles (UCLA, Occidental, Loyola Marymount, etc.) that have contributed finding aids to the OAC.