HUMPHREY'S GOLD MINING CO. PLACER Clancy District. Jefferson County. Minerals Yearbook 1938. Page 350. The company handled 1,433,445 cu. Yds. Of gravel in 1937 and produced 5,551 ounces of gold and 2,118 ounces of silver.
WPA, "Humphrey" (1938). Minerals Yearbook, All. 1038.
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Humphrey Gold, Clancy District, Jefferson County, Placer, gravel