Robert F. Heizer's many works include the classic "The Other Californians: Prejudice and Discrimination under Spain, Mexico, and the United States to 1920" (1971), written with Alan Almquist. In his introduction, Albert L. Hurtado sets the documents in historical context and considers Heizer's influence on scholarship as well as the advances made since his death. A professor of history at Arizona State University, Hurtado is the author of "Indian Survival on the California Frontier,"