Born-Digital or AnalogAnalogTranscriptEngineer mine. San Juan region, Colorado mentioned. 1870 - cc'.1 Description. R. M. News. Oct. 18, 1879. p.3 c.1 R. 11. News. 3ept. 19, 1879.p.2 c.1 Description; assays. R. M. News. July 20, 1882. p.2 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Engineer mine. San Juan region, Colorado, [238632]. Denver Public Library Digital Collections, accessed 12/03/2026, https://digital.denverlibrary.org/nodes/view/1483781
