(Smith, 18', 1991, 38-33-d) across Knapp Run NE of Summerville, Clover Township, Jefferson County, PA. PA28 NE about 1.8 miles from jct with Water St. / Summerville Corsica Rd. on the E. side of Summerville to the bridge on the N. side of the road by apartments. (10-29-93, approximate) Photo by Richard Donovan, submitted by Brian McKee.