Born-Digital or AnalogAnalogTranscriptMines & mineral resources. Colorado. Boulder county List of towns, origin; list, mines; bullion, 1889. Hall. History. Colo. v.3 p.308 Iron ore deposit, Caribou mentioned. Baker & Hafen.Hist.Colo. v.2 p.572 Development, Caribou district. R. M. News. Dec. 29, 1872. p.4 c.3 Mines; list. R. M. News. Aug. 2, 1881. p.4 c.4 Activities; retorts on exhibit; value. R. M. News. Aug. 5, 1881. p.4 c.4CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Mines & mineral resources. Colorado. Boulder county, [425070]. Denver Public Library Digital Collections, accessed 10/02/2026, https://digital.denverlibrary.org/nodes/view/1417199
