• Creator
  • Geological Survey (U.S.)
  • Created Date
  • 1941-1941
  • Description
  • Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army."; "Surveyed in 1921, 1931, 1934, and 1935"; "Contour intervals 10 and 20 feet changing on the 580 foot contour."; Shows roadway classification as of 1940. 45 x 34 cm.; 1 map, colored. 1:62,500. Geological Survey (U.S.); Geological Survey Division (Urbana, Ill.).