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 Holland Canyon, CA 1961, photorevised 1973, DMA 1955 II SW-Series V895; Packwood Creek, CA 1961, photorevised 1973, DMA 1955 II SE-Series V895." "First printing, October 2006." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."