by Thomas W. Dibblee, Jr. ; edited by John A. Minch. Relief shown by contours and spot heights. "Topographic base map from available USGS 7.5-minute quadrangle Cordelia, CA 1951, DMA 1560 II NW - Series V895, PHOTOREVISED 1980; Fairfield South, CA1949, DMA 1560 II NE - Series V895, PHOTOREVISED 1980." "First printing, February 2006." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."