Born-Digital or AnalogAnalogTranscriptSpar mine. Roaring Fork DISTRICT COLORADO Ore specimens, NATIONAL EXPOSITION , Denver. R. M. News. July 18, 1882 p.2 c.l Rich strike; cost per ton, LEADVILLE Rep. Jan. 20, 1881 p.6 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Spar mine. Roaring Fork DISTRICT COLORADO, [575907]. Denver Public Library Digital Collections, accessed 18/05/2025, https://digital.denverlibrary.org/nodes/view/1686672
