UMPLEBY AND JONES 1923 USGS BULL 732 P 103-104BELL 1913 FOURTEENTH ANN REPT MINING IND IDAHO FOR 1912 P 1MOORE 1910 ELEVENTH ANN REPT MINING IND IDAHO FOR 1909 P 12BELL 1912 THIRTEENTH ANN REPT MINING IND IDAHO FOR 1911 P 1SHANNON 1926 US NATL MUSEUM BULL 131 P 100, 112RANSOME AND CALKINS 1908 USGS PROF PAPER 62, P 190SHENON 1938 ID BUR MINES AND GEOLOGY PAMPH 47, P 15HOSTERMAN 1956 USGS BULL 1027-P P 725-748