""Report On the Geological Survey of the State of Iowa,"" subtitled ""Embracing the Results of Investigations Made During Portions of the Years 1855, 56 & 57,"" presents a detailed scientific record of the geological features of Iowa in the mid-19th century. Authored by Josiah Dwight Whitney, James Hall, Amos Henry Worthen, and the Iowa Geological Survey, this report documents the findings of extensive field research. It offers invaluable insights into the geological composition, natural resources, and evolving understanding of Iowa's landscape during a pivotal era of American expansion and scientific discovery. This historical document remains a significant resource for researchers and anyone interested in the geological history of the American Midwest.
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