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 Arroyo Grande NE, CA 1965, revised 1993, DMA 1854 II NE -- Series V895." "Contour interval 40 feet." "First printing, April 2006." "James E. Slosson Honorary Map." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."