Born-Digital or AnalogAnalogTranscriptEmpire mine. Animas mining district Colorado Silver specimen 1873. p.2 c.3 Formation. R. M. News. Aug. 13, 2873, p.2 c.3 Assay; owner. R. M. News. Nov. 13, 1877. p.2 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Empire mine. Animas mining district Colorado, [238157]. Denver Public Library Digital Collections, accessed 09/12/2025, https://digital.denverlibrary.org/nodes/view/1480999
