Resource Type
States
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Geology and Ore Deposits of the Breckenridge District, Colorado
Study of the geology and ore deposits of the Breckenridge District in Colorado.
Date:
1911
Creator:
Ransome, Frederick Leslie
System:
The UNT Digital Library
A Biological Survey of Colorado
From introduction: "Report based chiefly on the field work prosecuted during 1905, 1906, 1907, and 1909. It is primarily a characterization of the several major distribution areas or life zones."
Date:
August 17, 1911
Creator:
Cary, Merritt
System:
The UNT Digital Library