 From Greeley, PA 37 continued south along the PA 434 alignment to its southern terminus at U.S. Route 6.In 1946, PA 37 was removed from the PA 590 alignment.While PA 37 occupied the segment of modern PA 434 from US 6 to Greeley, a spur of PA 37, Pennsylvania Route 137, occupied the remainder of PA 434 from Greeley to the state line from 1928 to 1946.