(Petersburg #3) in Petersburg, Menard County, IL. IL97 (6th St.) N. 2 blocks from jct with IL123 (Sangamon Av.), W. on Rutledge Av. 0.3 miles, N. on Northridge Dr. 2 blocks, W. (left) on Harris St. 1 block, S. (left) on 12th St. 100 yds, W. (left) on Mary Todd Ln. 0.1 miles to the tower on the N. side of the road. (11-4-09, N40 00.986 W89 51.437)