(HIP) in Hannibal, Marion County, MO. Warren Barrett Dr. E. 0.35 miles from jct with US61, S. on New London Gravel Rd. 0.1 miles to the tower on the E. side of the road up a driveway 0.1 miles. (N39 40.643 W91 24.212) Photos by Jack & June Schmidt 8-4-21.