Raymond Brandes, trans., The Costansó Narrative of the Portolá Expedition, (Newhall: Hogarth Press, 1970). This is a the first published account of the founding of San Diego.

Costo and Jeannette Henry Costo, eds., The Missions of California: A Legacy of Genocide(Michigan: Indian Historian Press, 1987). A severe criticism of the California Missions written by Indian historians.

Martin Cole and Henry Wallace eds. and Arthur P. Botello, trans., Don Pío Pico's Historical Narrative(Los Angeles: Arthur H. Clark Co., 1973). A first hand account of San Diego by one of its early settlers.

Sherburne F. Cook, The Conflict between the California Indian and White Civilization(Berkeley and Los Angeles: University of California Press, 1976). A critical view of the missions written by an Anthropologist.