Mines and mineral resources. Colorado. Tin cup district. Proposed map, Tin Cup Record. R.M. News. Jan. 31, 1882 p.2 c.3 Bullion production. R.M. News. Feb. 21, 1882 p.7 c.3 Activities, Jimmy Mack, Gold cup & G.Z. mines. R.M. News. Mar. 2, 1882 p.2 c.4 Activities, mines; list. R.M. News. Pear. 10, 1882 p.3 c.3 Activities, Jimmie Mack, Grand Duke & Fannie mines. R.M. News. Mar. 14, 1882 p.2 c.4 Activities, mines; list. R.M. News. Mar. 28, 1882 p.2 c.3
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