1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated in 1976; interpretations derived from soil map constructed 1960.; "Projection and 10,000-metre gr... Dept. of Agriculture, Soil Conservation Service (Washington.).
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1981. Schmidt, James J. Includes location map. Scale 1:62,500 Relief shown by contours and spot heights. by James J. Schmidt ; cartography, VK. Ohio. Division of Water.
1900. Row, W. C. made under the direction of the Ohio Canal Commission from W.C. Row's Survey ; A.H. Sawyer, E. E. Booton, Draughtsmen. Also shows land ownership in...