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 Topo Valley CA 1969, photorevised 1984. DMA 1756 I NE, 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. "Gerry Kuhn honorary map." Includes "pertinent references", most recent 1974.