Born-Digital or AnalogAnalogTranscriptHoosier mine. Centennial Hill district, Colorado Valuable discovery on the extension. R.M.News. Oct. 15,1875 p.4 c.2 Activities; native copper. R.M.News. Oct. 21,1875 p.4 c.3CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Hoosier mine. Centennial Hill district,, [317278]. Denver Public Library Digital Collections, accessed 12/03/2026, https://digital.denverlibrary.org/nodes/view/1449197
