by Thomas W. Dibblee, Jr. ; edited by John A. Minch. Relief shown by contours and spot heights. "Topographic base maps from available USGS 7.5-minute quadrangle ESTRELLA, CA 1948, AMS 1855 II NE -- V895 PHOTOREVISED 1979; SHANDON, CA 1961 DMA 1955 III NW -- V895 REVISED 1993." "First printing, June 2004." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."