Born-Digital or AnalogAnalogTranscriptBoulder County mine. Boulder county. Colorado Celebrated; large silver producer. History; developments; Republican discovered., 1872. Rep. May 4 History. Rep. Jan. is Operations, Caribou district 1881 p.14 c.1 1881 p. 2 c.3 1882 p. 3 c.5 1882 p.15 c.2 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Boulder County mine. Boulder county. Colorado, [27699]. Denver Public Library Digital Collections, accessed 10/02/2026, https://digital.denverlibrary.org/nodes/view/1186366
