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Google Analytics Dashboard for Digital archive : previously unpublished expedition sketches by Henry W. Elliott united with the Preliminary field report of the United States Geological Survey of Colorado and New Mexico, 1869, by F.V. Hayden
Digital archive : previously unpublished expedition sketches by Henry W. Elliott united with the Preliminary field report of the United States Geological Survey of Colorado and New Mexico, 1869, by F.V. Hayden