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Start Over Year 1921 Publisher Kentucky Geological Survey (Lexington, Ky.) Bounding Box -180 -89.81531 180 89.456192

1. Kentucky-Illinois Golconda quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1921. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1914, 1916 and 1920.";"Surveyed in cooperation with the States of Kentucky and Illinois."; (W 88⁰30ʹ00ʺ--W 8... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Kentucky Geological Survey (Lexington, Ky.).