• Creator
  • Geological Survey (U.S.)
  • Created Date
  • 1951-1951
  • Description
  • Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1940-1941. Topography by plane-table methods, 1926, 1930, 1945, and 1949."; "Contour interval 10 feet."; Coordinates: (W 89⁰15ʹ00ʺ--W 89⁰00ʹ00ʺ/N 40⁰30ʹ00ʺ--N 40⁰15ʹ00ʺ). 45 x 35 cm.; 1 map, colored. 1:62,500. Geological Survey (U.S.); Geological Survey Division (Urbana, Ill.).