(Retherford’s Farm Market, ~20', 38-19-v) across drainage ditch S. of Benton, Benton Township, Columbia County, PA. PA487 S. 0.55 miles from jct with PA239 in Benton to the bridge on the W. side of the road. (N41 11.130 W76 23.101) Photos by Karl Young 10-8-21.