Born-Digital or AnalogAnalogTranscriptHercules mine. Aspen district colorado In Carbonate belt. 1880 p.7 c.l Covers, ground claimed by Aspen Mammoth lode. R. h. News. Aug. 15, 1884 .6 c.2 Contract for development. R. M. News. Dec. 10, 1884 p.6 c.2 Worked on contract. R. M. News. Jan. 5, 1885 p.6 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Hercules mine. Aspen district colorado, [306571]. Denver Public Library Digital Collections, accessed 21/01/2026, https://digital.denverlibrary.org/nodes/view/1453641
