Born-Digital or AnalogAnalogTranscriptMain and Hutchison Chemical laboratory, Central City, Colorado. R.M.Netivs.July 1,1867 p.4 c.5 Assayers, Central City, Colorado. R.M.News.Apr.10,1867 p.4 c.l Chemical laboratory, assaying & engineering advertised. Denver. R.M.News. Sept. 10, 1866CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng