Born-Digital or AnalogAnalogTranscriptNew York & COLORADO reduction works. Idaho Springs. COLORADO Temporary shut down; propose modifying its process. R. M. News. June 22, 1880. p.3 c.1 Transfer. R. M. News. Dec. 16, 1880, p.3 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
New York & COLORADO reduction works. Idaho Springs. COLORADO, [454356]. Denver Public Library Digital Collections, accessed 17/01/2026, https://digital.denverlibrary.org/nodes/view/1468368
