by Thomas W. Dibblee, Jr. ; edited by John A. Minch. Relief shown by contours and spot heights. "Contour interval 40 feet." "Topographic base map from available USGS 7.5-minute quadrangle Manzanita Mountain, CA 1964, AMS1953 I NE -- Series V895." "First printing, October 2005." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."