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 Spreckels, CA 1947, photorevised 1984, DMA 1657 II SW -- Series V895." "First printing, September 2007." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. William L. "Bill" Bilodeau honorary map. Includes "pertinent references", most recent published in 1999.