 Other allusions to the state 's people , places , and events include the Black Hawk War , author Carl <unk> , Stephen A. Douglas , Abraham Lincoln , the <unk> River , the Chicago Cubs , the <unk> Tower dubbed " Seer 's Tower " ( now called Willis Tower ) , and the localities of Jacksonville , <unk> , Metropolis , <unk> Caledonia , <unk> , Magnolia , <unk> , <unk> , and the several locations named <unk> , Illinois . During the tour following the release of Illinois , Stevens ' band wore cheerleader outfits based on those of the University of Illinois . 
