1912. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1908-1909.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heig... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
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1912. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1910.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. Volume 1 includes Robbinsdale and Os... Sanborn Map Company (New York), 1913.
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. v.2: sheets 111-223 70 Centimeters S... Sanborn Map Company (New York), 1913.
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. Volume 3 includes map of congested ... Sanborn Map Company (New York), 1913.
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. v.4: sheets 331-449 70 Centimeters S... Sanborn Map Company (New York), 1913.
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. v.5: sheets 451-554 70 Centimeters S... Sanborn Map Company (New York), 1913.
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. Volume 6 includes Big Island Park, B... Sanborn Map Company (New York), 1913.
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. Volume 7 includes Columbia Heights a... Sanborn Map Company (New York), 1913.
1912. Sanborn Map Company. Partially hand-colored. Each volume includes a map of ward lines and district lines and a volume boundary map. v.8: sheets 901-986 70 Centimeters S... Sanborn Map Company (New York), 1913.