1901. Rand McNally and Company. In lower left: Rand McNally & Co.'s sectional map of Iowa. 80 x 113 centimeters Scale [1:506,880] 1 inch = 8 miles General Map Collection. Rand McNally (Chicago), 1901.
1915. Iowa. Board of Railroad Commissioners. 8 miles = 1 inch; 1 map Material in the public domain. No restrictions on use. University of Iowa. Libraries. Map Collection. Rand McNally and Company.