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Published online by Cambridge University Press: 25 January 2017
Contra Costa County lies east of San Francisco Bay, between the southern shores of San Pablo Bay, Carquinez Straits, Suisun Bay and the San Joaquin River, on the north, and Mount Diablo on the south. This peak, the highest of the many ranges of hills, reaches an altitude of 3800 feet. The terrain is very diversified. As to prehistoric inhabitants, Kroeber places the entire area in Costanoan territory, while Schenck mentions the Yachicomnes, etc., names, perhaps of Spanish invention, which mean nothing.
1 An Introduction to the Archeology of Central California. Bulletin 2, Department of Anthropology, Sacramento Junior College, Sacramento, 1939.
2 Nelson, N. C., University of California Publications in American Archaeology and Ethnology, 1910.
3 Schenck, W. E., University of California Publications in American Archaeology and Ethnology, 1927.
4 Lillard, Heizer and Fenenga, op. cit.
