Born-Digital or AnalogAnalogTranscriptSilver. Discoveries D.C. Daley discovered 1st true silver-bearing lode in Colorado in Sept. 1860 on Silver Mountain near Empire. History of Clear Creek County p.278 S.B. WOMACK discovered great fissure in July 1861. Worked for gold only. Colorado Gazetteer. 1871 p.156CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng