United States. Bureau of Public Roads. Geological Survey (U.S.)Cartographic Details: Scale 1:500,000 ; Modified polyconic projection (W 97°--W 90° / N 48°--N 44°). Sheets numbered 23NE, 23NW, 23SE, and 23SW. Base map from U.S. Geological Survey state map. "Data corrected to July 31, 1937." Contents: Northeastern Minnesota -- Northwestern Minnesota -- Southeastern Minnesota -- Southwestern Minnesota.140 x 115 centimetersJPEGUMN_ALMA:9944105250001701engThe Bureau (Washington D.C.)PublicThe Federal Aid Highway System progress map : [Minnesota]MapsMinnesota1933University of Minnesota