View of Portland and Independence Mines on Battle Mountain (Cripple Creek Mining District, Teller County), Victor, Colorado; Portland Mine, upper right, largest and most productive in Colorado until surpassed by Homestake Mine's production in...
Victor (Colo.)--1890-1910.; Mining--Colorado--Victor--1890-1910.; Colorado Midland Railway Company.
[between 1899 and 1910]
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