Born-Digital or AnalogAnalogTranscriptMalachite works. Golden, Colorado W&EX Acid manufacturer; low grade ores. R. M. News. Jan. 1, 1880. p.20 c.1 Furnace operated by Valley smelting works. R. M. News. July 31, 1880. p.3 c.1 Change of proprietors; iron foundry. R. Id. News. Jan. 13, 1881. p.8 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
