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 Natividad CA 1947. Photoinspected 1974. Photorevised 1984. DMA 1657 II NE series V895." "First printing, September 2007." Includes location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology, most recent 1973. Includes "pertinent references", most recent 1999.