Born-Digital or AnalogAnalogTranscriptMines & mineral resources. Colorado Breckenridge district Specimens, Blue region mines & companies; list. R. M. News. Sept. 23, 1880.p.7 c.3 Activities, Nigger & Gibson hills. R. M. News. Feb. 14, 1880. p.2 c.2 `' Activities; preparing for boom. R. M. News. Mar. 3, 1880. p.2 c.2 Mines; mineralogy; discoveries, hills; lists. R. M. News. Mar. 25, 1880. p.8 c.4 Late discoveries, minerals; list, Gibson & Illinois hills. R. M. News. Mar. 30, 1880. p.8 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
