FRACTION Pony District (Mineral Hill). Madison County. Minerals Yearbook 1940. Page 362. Shipped crude ore to smelter in district producing. (Gold, silver, copper, lead, and zinc section.)
WPA, "Fraction" (1940). Minerals Yearbook, All. 518.
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Fraction, Pony District, Mineral Hill, Madison County, gold, silver, copper, lead, zinc