(IL-90-04) NE of Green Valley, Sand Prairie Township, Tazewell County, IL. Toboggan Av. (CR600N) E. 2.4 miles from jct with IL29 on the W. side of Green Valley, N. on Towerline Rd. (CR1700E) 2.0 miles, W. on Goeken Rd. 0.1 miles to the house on the N. side of the road at 16900. (5-25-08, N40 26.267 W89 36.482)