Fort Ancient : the great prehistoric earthwork of Warren County, Ohio / compiled from a careful survey, with an account of its mounds and graves, a topographical map, thirty-five full-page phototypes, and surveying notes in full, by Warren K. Moorehead.

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Fort Ancient : the great prehistoric earthwork of Warren County, Ohio / compiled from a careful survey, with an account of its mounds and graves, a topographical map, thirty-five full-page phototypes, and surveying notes in full, by Warren K. Moorehead. Public Domain Mark. Source: Wellcome Collection.