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 Mercey Hot Springs, CA 2000. NIMA 1857 III NE--Series V895." "First printing, June 2007." Includes location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology, most recent 1972. Mel Erskine honorary map. Includes "pertinent references", most recent 1972.