1910. Colorado. Bureau of Mines. Includes 3 insets. 73 x 85 centimeters Scale [1:760,320] 1 inch = 12 miles General Map Collection. The Bureau? (Denver, Colo).
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2. State of Colorado : compiled from the official records of the General land office and other sources
1910. United States. General Land Office. Shows United States reclamation projects.; Inset maps: Leadville. -- City of Denver. -- Cripple Creek.; "Note: Medicine Bow National Forest now Col... Supt. of Docs., G.P.O (Washington, D.C).