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 Wunpost CA 1949. Photorevised 1979. AMS 1855 IV NE - series V895." "First printing, May 2006." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology, most recent field work 2003. Includes "pertinent references", most recent 1979.