Reference | {Deposit:: CRAWFORD, J. J., 1896 , THIRTEENTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, VOL. 13 , P. 258 .}{Deposit:: JOHNSTON, W. D., 1940 , THE GOLD QUARTZ VEINS OF GRASS VALLEY, CALIFORNIA: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 194 , P. 86 - 87 .}{Production:: JOHNSTON, 1940} |