Born-Digital or AnalogAnalogTranscriptLaurium mine. Breckenridge district colorado Mentioned. R. M. News. May 16, 1880. p.3 c.1 Description. R. M. News. May 20, 1880. p.8 c.6 Management; development. Small; paying. R. M. Newws^. OAutg'.1 c '.^lCollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Laurium mine. Breckenridge district colorado, [370437]. Denver Public Library Digital Collections, accessed 10/02/2026, https://digital.denverlibrary.org/nodes/view/1651614
