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Start Over You searched for: Collection 01d-01 Remove constraint Collection: 01d-01 Year 1951 Remove constraint Year: 1951 Bounding Box -40.000931 39.999015 -39.999064 40.000987 Remove constraint Bounding Box: -40.000931 39.999015 -39.999064 40.000987

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1951. Patton, John B. (John Barratt), 1915-. Blue line.; August, 1951.; Not for publication, for correspondence use only--Upper margin. Scale approximately 1:1,500,000. Indiana Dept. of Conservation, Geological Survey.