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 North Chalone Peak CA 1995. NIMA 1756 I NW, series V895." "First printing, April 2007." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology, most recent 1970. "Stephen M. Testa honorary map." Includes "pertinent references", most recent 1979.