Here are some interesting California history links:
Online archive of California: http://www.oac.cdlib.org>
Chronology of California history: http://www.socalhistory.org/LA%20Chronology0001.html
California Rancho hisotry: http://www.lib.berkeley.edu/EART/rancho.html
Ernest Marquez Book: http://www.californiaauthors.com/excerpt-marquez.shtml