- Geological Survey (U.S.)
- University of Illinois at Urbana-Champaign, University Library
Relief shown by contours and spot heights.; "Surveyed in 1921 and 1939-1940."; "Topography in Indiana from chart of the Wabash River by Corps of Engineers, U.S. Army."; "Contour interval 10 feet."; Coordinates: (W 88⁰15ʹ00ʺ--W 88⁰00ʹ00ʺ/N 38⁰15ʹ00ʺ--N 38⁰00ʹ00ʺ). 45 x 36 cm.; 1 map, colored. 1:62,500. Geological Survey (U.S.); Geological Survey Division (Urbana, Ill.).