The papers of the California Democratic State Central Committee document the work of the Democratic Party within the state of California predominately in the 1960s. Some materials are from related organizations such as the California Democratic Council, the Democratic National Committee, and Democratic Associates, Inc.

The California Farmworkers Oral History Project interviewed farm workers from California to speak about their experiences.

Letters discussing business and travel in California during the gold rush from various goldminers to family and friends written between 1853 and 1863.

Tourism and real estate promotion have been longtime means of encouraging people to vacation and settle in California. The California Tourism and Promotional Literature Collection includes county, regional, and statewide promotional literature used to promote tourism and real estate development across the state of California.

Antonio Regalado Calvo and Maria de la Luz Mendez Calvo were immigrants from the Mexican state of Sonora. They immigrated to the San Fernando region of California where they met and married during the Mexican Revolution. The collection gives a glimpse into the lives of a Mexican-American family in the Los Angeles area during the mid-20th century.