Born-Digital or AnalogAnalogTranscriptColumbia avenue mine. Central City district Colorado Machinery placed; water trouble; proposed extensive developments. ,1885 p.6 c.1 Ore vein exposed. Denver republican ,1881 p.7 c.1 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Columbia avenue mine. Central City district, [47475]. Denver Public Library Digital Collections, accessed 24/01/2026, https://digital.denverlibrary.org/nodes/view/1209334
