by Thomas W. Dibblee, Jr. ; edited by John A. Minch. Relief shown by contours and spot heights. "John E. Allen honorary map." "Topographic base map from available USGS 7.5-minute quadrangle Prunedale, CA 1954, revised 1993, DMA 1657 SW, Series V895. San Juan Bautista CA 1997. NIMA 1657 I SE, Series V895." "First printing, June 2006." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology. Includes "pertinent references."