(Double T, OH-71-40) E. of Greenfield, Buckskin Township, Ross County, OH. OH28 E. 3.1 miles from jct with OH138 E. of Greenfield to the quilt on the S. side of the road at 3370. Margie & Bobby Trefz. (N39 21.203 W83 18.866) Photos by Jack & June Schmidt 7-16-15.