(Square Knot) in Comlara Park NW of Hudson, Hudson Township, McLean County, IL. E2500N Rd. W. 1.2 miles from jct with I39 exit 8 N. of Hudson, S. on N1275E Rd. 0.5 miles, W. (curves S.) on Recreation Area Dr. 0.6 miles to the knot to the E. (N40 38.166 W89 01.988) Photos 12-16-17.