by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. "Contour interval 50 feet." Jan Schultz Honorary Map. "Topographic base map from available USGS 7.5-minute quadrangle Fox Mountain, CA 1943. AMS 2053 I SE -- Series V895." "First printing, October 2007." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology, most recent 1968. Includes "pertinent references", most recent published in 1982.