The Federal aid highway system progress map : [Iowa]
Base map from U.S. Geological Survey State Map.; "Published in accordance with Act of Congress approved Nov. 9, 1921, creating the Federal Aid Highway System."; "Data corrected to Dec. 31, 1927."; "Approved Federal Aid Mileage Iowa ... 7,212.00."
sheets 79 x 56 centimeters
Scale approximately 1:500,000; 1 inch = 7.891 miles
General Map Collection
Use of this item may be governed by US and international copyright laws. You may be able to use this item, but copyright and other considerations may apply. For possible additional information or guidance on your use, please contact the contributing organization.