(24 sides, ~70', MO-10-10) S. of Columbia, Columbia Township, Boone County, MO. Grindstone Av. W. 0.55 miles from jct with US63 S. of Columbia, S. on Bearfield Rd. 0.65 miles, E. on Woodhaven Dr. 150 yds to the bldg on the S. side of the road. (N38 54.189 W92 18.157) Photo by Jack & June Schmidt 10-2-15.