tag:digital.library.illinois.edu,2005:/items/a8be5b60-994e-0134-2096-0050569601ca-cIndiana-Illinois, New Harmony quadrangle : topography2022-09-15T18:31:58Ztag:digital.library.illinois.edu,2005:Item/701332016-11-30T19:20:28Z2022-09-15T18:31:58ZIndiana-Illinois, New Harmony quadrangle : topographyContour interval 20 feet.University of Illinois at Urbana-Champaign Library