Northern Central Colorado.

Northern Central Colorado. U.S. Geological and Geographical Survey of the Territories. F.V. Hayden in Charge. A.R. Marvine, A.C. Peale, and Wm. H. Holmes, Geological Assistants. Surveyed in 1873, '74 & '75. Sheet XII.

Hayden, F.V.

1881

1881

Department of The Interior. United States Geological and Geographical Surveys of the Territories.

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