Relief shown by contours. Map covers portions of Spencer and Warrick Counties in Indiana. Shows soil types classification by colors and symbols. "Field Operations, Bureau of Soils, 1904." "Base map from U. S. Geological Survey sheets." "Julius Bien & Co. Lith. N.Y.", Imprint: [Washington, D.C.?] : The Bureau, [1904?], Scale: 1:63,360, Coordinates: W0871000 W0870000 N0380500 N0374600
Mangum, A. W., Neill, N. P. (Nelson Prentice) (1904). Soil map, Indiana, Boonville sheet. United States. Bureau of Soils. https://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00804 (map)