The barn is visible in the background of photo 5 (Google street view - Oct. 2007); however, a more recent view shows either a different barn in that location or one that has been renovated. In either case it can be safely assumed that the old faded MP sign is gone.
Where to find it
*GONE* OH Rt. 78 (Shenandoah Trail) northwest of OH Rt. 145 (Malaga St.), in Lewisville, by 5.0 miles. The barn is on the right side of the highway headed north west. The MP sign faced south. One side. Black.