by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. James "Jim" Vernon honorary map. "Topographic base map from available USGS 7.5-minute quadrangle Partington Ridge, CA 1995. NIMA 1656 II NW -- 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 1991. Includes "pertinent references", most recent published in 1999.