Born-Digital or AnalogAnalogTranscriptmines mineral resources colorado san juan region Production, 1878. R.Y.News.Anr.12, 1879 n.4 c.5 Extensive rich districts. R.M.News.AiDr.24,1872 n.% c.1 Congress corner mine, cement Mineral creek R.M.News.Cct.9,1882 p.3 c.1 Activities, mines; districts; lists. R.M.News.Aug.6,1881 n.2 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
mines mineral resources colorado san juan region Production, 1878, [434326]. Denver Public Library Digital Collections, accessed 12/02/2026, https://digital.denverlibrary.org/nodes/view/1427546
