You searched for: Publisher Indiana Dept. of Conservation, Geological Survey Remove constraint Publisher: Indiana Dept. of Conservation, Geological Survey Collection Indiana Historic Maps Remove constraint Collection: Indiana Historic Maps Year 1951 Remove constraint Year: 1951
1951. Patton, John B.(John Barratt), 1915-cartographer. Blue line.; August, 1951.; Not for publication, for correspondence use only--Upper margin. Scale approximately 1:1,500,000.