Born-Digital or AnalogAnalogTranscriptCoal , Rock creek district colorado Districts; description; shaft produces coal & silver ore. R. U. News. Dec. 9, 1877 p.2 c.2 Activities; location, description. R. M.News. Feb. 19,1883 p.3 c.2 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Coal , Rock creek district colorado, [181605]. Denver Public Library Digital Collections, accessed 20/04/2026, https://digital.denverlibrary.org/nodes/view/1525810
