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Creator
- Schwartz, George M. (George Melvin), 1892-198018
- Geological Survey (U.S.)17
- Dempsey, W. J.2
- Duffner, R. T.2
- Henderson, John R.2
- Wisconsin Department of Natural Resources2
- American Geographical Society of New York1
- Hamlin, Guy R., cartographer.1
- Minnesota. Department of Highways1
- Parvis, M.1
- United States. Army Map Service1