(Optical Illusion, OH-14-08) WNW of Martinsville, Clark Township, Clinton County, OH. OH28 W. 0.65 miles from jct with High St. in Martinsville, N. (curves W.) Martinsville Rd. 0.3 miles to the quilt on the S. side of the road at 3308. Ed & Luan Winkle. (N39 19.660 W83 49.706) Photos by Jack & June Schmidt 5-30-15.