tag:digital.library.illinois.edu,2005:/items/9c586f50-82d4-0134-1f08-0050569601ca-1Illinois, Gibson City quadrangle2022-09-15T18:31:28Ztag:digital.library.illinois.edu,2005:Item/669252016-11-15T17:24:57Z2022-09-15T18:31:28ZIllinois, Gibson City quadrangleRelief shown by contours and spot heights.University of Illinois at Urbana-Champaign Library