12 volumes comprising: First, Second, and Third Annual Reports of the United States Geological Survey of the Territories for the Years 1867, 1868, and 1869. [1873] * Preliminary Report of the United States Geological Survey of Wyoming and Portions of Contiguous Territories. [1871] * (Another copy) [1872] * Preliminary Report of the United States Geological Survey of Montana and Portions of Adjacent Territories. [1872] * Sixth Annual Report of the United States Geological Survey of the Territories, Embracing Portions of Montana, Idaho, Wyoming and Utah. [1873] * Annual Report of the United States Geological and Geographical Survey of the Territories, Embracing Colorado. [1874] * Annual Report of the United States Geological and Geographical Survey of the Territories, Embracing Colorado and Parts of Adjacent Territories. [1876] * Ninth Annual Report of the United States Geological and Geographical Survey of the Territories Embracing Colorado and Parts of Adjacent Territories. [1877] * Tenth Annual Report of the United States Geological and Geographical Survey of the Territories Embracing Colorado and Parts of Adjacent Territories. [1878] * Eleventh Annual Report of the United States Geological and Geographical Survey of the Territories Embracing Idaho and Wyoming. [1879] * Twelfth Annual Report of the United States Geological and Geographical Survey of the Territories Embracing Wyoming and Idaho. 2 volumes. [1883]. Illustrated with lithographs, color lithographs, woodcuts, maps, etc. Together 12 8vo volumes in original brown cloth.
From 1869 till 1872 Dr. Hayden conducted a series of geological explorations in Dakota, Wyoming, Utah, and Colorado, the scope of investigation including, besides geology, the natural history, climatology, resources, and ethnology of the region. It was largely in consequence of his explorations and reports that congress was led to set apart the Yellowstone National Park as a perpetual reservation. In 1873 geography was added, and the name of the organization then became the Geological and Geographical Survey of the Territories. Dr. Hayden continued the direction of this survey until 1879.
Condition:
7 of the 12 volumes are ex-library copies with various library markings, bookplates, etc. General wear to extremities, backstrip nearly detached on one volume, most hinges cracked or tender. All plates and maps present with the exception of one plate in the 10th annual report (p475) although it appears that this plate was never bound in. Overall good or better.