1949. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods 1947.";Relief... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
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1894. Sanborn Map Company. Scale ca. 1:600. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Fire insurance map hand ... Sanborn-Perris Map Co.
1901. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Fire insuran... Sanborn-Perris Map Co.
1926. Sanborn Map Company. Scale ca. 1:600 Partial cadastral map. Sheet 1 includes symbol key, index, and location and index maps. Fire insurance map hand colored to show bui... Sanborn Map Company.
1922. Sanborn Map Company. [ca. 1:600] Partial cadastral map. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Fire i... Sanborn Map Company.
1884. Sanborn Map Company. Scale ca. 1:600. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Fire insurance map hand ... Sanborn Map & Publishing Co.
1890. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Fire insuran... Sanborn-Perris Map Co.
1855. D.B. Cooke & Co. Lith. by H. Acheson, ...Chicago.;Includes index to towns and railroads serving them.;Rail-road connections.;1 map, hand colored;71 x 53 cm.;ca. 1:9... D.B. Cooke & Co. (Chicago).
449. De Kalb Co., Ill
1980. United States. Soil Conservation Service. Base compiled from USGS 1:24 000-scale topographic maps dated 1968-1975, map edited 1978, revised from aerial photographs taken 1975; interpretatio... Dept. of Agriculture, Soil Conservation Service (Washington.).
1897. Sanborn Map Company. Scale 1:600. 50 ft. to 1 in. Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers. Fire insuran... Sanborn-Perris Map Co.