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 CHOLAME HILLS, CA 1961, DMA 1955 IV SW Series V895 PHOTOREVISED 1993." "First printing, February 2005." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."