tag:digital.library.illinois.edu,2005:/itemsItems2022-09-15T18:31:27Ztag:digital.library.illinois.edu,2005:Item/668872016-11-15T17:24:41Z2022-09-15T18:31:27ZIllinois, Ina quadrangle : 15-minute seriesRoad classification as of 1942.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/668902016-11-15T17:24:42Z2022-09-15T18:31:27ZIllinois, Equality quadrangle : topographyRelief shown by contours and spot heights.University of Illinois at Urbana-Champaign Library