tag:digital.library.illinois.edu,2005:/itemsItems2022-09-15T18:31:55Ztag:digital.library.illinois.edu,2005:Item/700842016-11-30T19:20:13Z2022-09-15T18:31:55ZIllinois-Wisconsin, McHenry quadrangleRelief shown by contours and spot heights.University of Illinois at Urbana-Champaign Library