Rogers, Andrew N Report,gold milling in Gilpin co.1882. Stone.History colorado Bobtail gold mining co supt. Hall.Hi.s;.Colo.'v.3 p-.420 Mentioned, Denver. R.M.News.Jan.18,1882 p.5 c.1 Of the Bobtail mine, Central, Colo. R.M.News.July 31,1881 p.3 c.4 Manager Bobtail mine, Black Hawk, Colo. R.Y.YewQ. Feb.IP,1882 p.6 c.3
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