San Francisco / Sacramento: Division of Mines/California Department of Natural Resources, 1958. Soft cover. Near Fine. Item #51315
Pages 495 through 602 with photographs, graphs, tables and illustrations, plus foldout map in the rear pocket. Contents; Mines and Mineral Resources of Contra Costa County, California; Research in Mining and the Mineral Industries in California. Bound in original gray stiff paper covers printed in black. A few margin notes throughout. A near fine copy.