Born-Digital or AnalogAnalogTranscriptBobtail mine. Central City district colorado largest producer in state; activities. 1877 ore exhibit, State Fair, Denver. 1877 Members, Omaha Board of Trade visit. R. M. News. Nov. 16, 1877 History; monthly yield. , 1877 p.4 Visited by members, Amer. institute . of mining. engineers. 1882 p.4 0CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Bobtail mine. Central City district colorado, [81744]. Denver Public Library Digital Collections, accessed 16/01/2026, https://digital.denverlibrary.org/nodes/view/1242019
