United States. Bureau of Public RoadsExplanation of map at bottom of each sheet.; "Data corrected to Dec. 31, 1927."each 46 x 70 centimeters on sheets 55 x 79 centimetersJPEGUMN_ALMA:9917644060001701eng(Washington, D.C., )PublicFederal aid highway system progress map : [Alabama]MapsAlabamaUniversity of Minnesota