These databases may provide a starting point. You may also want to check out Database Subject areas related to your topic (for example, if you are looking at food deserts, a database in Sociology may also be helpful, etc.
Includes over 150,000 digitized pages of California newspapers spanning the years 1849-1911. They include the Alta California (1849-1889); the San Francisco Call (1900-1910); the Amador Ledger (1900-1911); the Imperial Valley Press (1901-1911); and the Los Angeles Herald (1905-1907).
CHIS is the nation's largest state health survey. Conducted every two years on a wide range of health topics, CHIS data gives a detailed picture of the health and health care needs of California's large and diverse population.
Access to more than 2500 datasets covering topics such as natural resources, health, economy, demographics and more in the state of California. Via the California Open Data Portal.
Dates vary. Full-text content of more than 600 U.S. newspapers and 700 international sources. Local, regional and world news, including community events, schools, politics, government policies, cultural activities, local companies, state industries, and people.