San Francisco: State of California, Dept. Of Natural Resources, Division of Mines, 1956. Quarto. Item #003766
Bulletin 174, December 1956. Profusely illustrated with goelogical maps including four fold-out maps in pocket inside back cover; claim maps; b/w photos (some aerial) of deposits, quarries, mining operations and products; tables amd graphs. Bibilography. Index. 119 pp.