(40', c1963, PA-41-01) E. of South Williamsport, Armstrong Township, Lycoming County, PA. US15 E. 0.9 miles from jct with PA554 (Market St.) in South Williamsport to the house on the N. side of the road at 767. (5-21-06, N41° 13.74', W76° 58.35') Photo by Jack Schmidt.