• Creator
  • Geological Survey (U.S.)
  • Created Date
  • 1952-1952
  • Description
  • Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table surveys 1951."; "Contour interval 10 feet."; Coordinates: (W 89⁰00’00"--W 88⁰45’00"/N 41⁰45’00"--N 41⁰30’00"). 45 x 34 cm.; 1 map, colored. 1:62,500. Geological Survey (U.S.); Geological Survey Division (Urbana, Ill.).