1906. Geological Survey (U.S.). Shows mines. Relief shown by contours and spot heights.; "E.M. Douglas, Geographer in charge. Topography by R.H. Sargent. Triangulation by T.M. Ban... U.S. Geological Survey (Washington, D.C).
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1906. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1905.";"Surveyed in cooperation with the State of Illinois.";Includes "diagram of township.";Relief indicate... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1906. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1905.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours.;1 map, colored;45 x 3... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1906. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1905.";"Surveyed in cooperation with the States of Illinois and Kentucky.";Relief shown by contours and spot... Geological Survey (Lexington, Ky.), Geological Survey (U.S.), and Geological Survey Division (Urbana, Ill.).
1906. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Surveyed in 1900."; Includes legend in right margin.; Text and ill. on verso. 49 x 76 centimeters Scal... U.S. Geological Survey (Washington, D.C).
1906. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Surveyed in 1900."; Includes legend in right margin.; Text and ill. on verso. 49 x 76 centimeters Scal... U.S. Geological Survey (Washington, D.C).
1906. Geological Survey (U.S.). Includes "List of principal reclamation projects." 43 x 71 centimeters Scale approximately 1:7,000,000 General Map Collection. U.S.G.S (Washington, D.C).