Born-Digital or AnalogAnalogTranscriptMines & mineral resources, Colorado Mine of graphite or plumbago discovered near Cimarron. R. Y. News. Feb..29, 1872 p.1 c.5 Placer activities; daily production, Clear Creek. R. Y. News. Feb. 29, 1872 p.1 c.6 Mining papers and journals; counties; list. R. III. News. i^^ar. 2, 1872 p.2 c.1 Denver iron works, advertises mining machinery. R. 11. News. Mar. 3, 1872 p.1 c.7 Discovery in Benson gulch; description. R. M. News. &ar. 9, 1872 p.1 c.4CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Mines & mineral resources, Colorado, [421887]. Denver Public Library Digital Collections, accessed 15/02/2026, https://digital.denverlibrary.org/nodes/view/1796293
