Secondary sources are works that analyze, assess or interpret an historical event, era, or phenomenon, generally utilizing primary sources to do so. Secondary sources often offer a review or a critique. Secondary sources can include books, journal articles, speeches, reviews, research reports, and more. Generally speaking, secondary sources are written well after the events that are being researched. However, if an individual writes about events that he or she experienced first hand many years after that event occurred, it is still considered a primary source.
Sleeper, Jim. The First Forty Years : The Story of Old Newport, 1868-1908. Newport Beach, Calif.: Irvine Company, 1968.
Raup, Hallock Floyd. The German colonization of Anaheim, California. Berkeley, Calif.: University of California Press. 1932.
Barron, Hal S., et al. Citriculture and Southern California. San Francisco, Calif.: California Historical Society, 1995.
Finney, Ben R. Surfing : a history of the ancient Hawaiian sport. San Francisco: Pomegranate Artbooks, c1996.