Born-Digital or AnalogAnalogTranscriptMines and mineral resources. Colorado. Gilpin county Description of Imperial Gold Mining and Milling Co.'s operation. Mi-Co Gilpin im Description of the volume of gold ore production in 1909. Mi-Co GilpinCollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Mines and mineral resources. Colorado, [425422]. Denver Public Library Digital Collections, accessed 15/03/2026, https://digital.denverlibrary.org/nodes/view/1418152
