by Thomas W. Dibblee, Jr.; edited by John A. Minch. Relief shown by contours and spot heights. "Prepared in cooperation with the California Department of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "Allan Barrows Honorary Map." "First printing, February 2002". Includes 2 col. cross sections, quadrangle location map, index to sources of geology, and index to adjacent 7.5 minute quadrangles. Includes "pertinent references".