by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. "Topographic base map from newest available USGS 7.5-minute quadrangle CHILAO FLAT, CA 1995, NIMA 2352 I Series V895" "Prepared in cooperation with the Santa Barbara Museum of Natural History and the Angeles National Forest." "James O'Hare Memorial Map." "First printing, May 2002". Includes 2 col. cross sections, quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references".