• Creator
  • Geological Survey (U.S.)
  • Created Date
  • 1943-1943
  • Description
  • Relief shown by contours and spot heights.; "Surveyed in 1909, 1922, 1936, 1937 and 1942"; "Contour interval 20 feet"; Shows roadway classification as of 1942.; Coordinates: (W 90⁰00ʹ00ʺ--W 89⁰45ʹ00ʺ/N 42⁰30ʹ00ʺ--N 42⁰15ʹ00ʺ). 46 x 33 cm.; 1 map, colored. 1:62,500. Geological Survey (U.S.); Geological Survey Division (Urbana, Ill.).