Mines and mineral resources. Colorado. Bonanza district Discoveries; assays; list. M.News. Nov.23, 1881 p.2 c.3 Activities, Copper & Squirrel gulches. R.M.News. Nov.25,1881 p.7 c.2 Owners; list, Adams mine. R.M.News. Dec.19,1881 p.6 c.l Assays. R.M.News. May 11,1882 p.2 c.2 Ore value. R.M.News. May 20,1882 p.3 c.3 Description, Exchequer mine. R.M.News. June 20,1882 p.2 c.l
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