Primary sources provide first-hand testimony or direct evidence. Examples include:
Secondary sources gather, interpret, and analyze primary sources. Examples include:
PHOTOGRAPHS
Sleepy Lagoon Defendents.1944. UCLA, Library Special Collections, Charles E. Young Research Library Calisphere.
NEWSPAPERS
Davies, Lawrence E. "Seek Basic Causes of Zoot Suit Fray." New York Times (1923-Current file): 21. Jun 11 1943. ProQuest. Web. 11 Sep. 2013