The Lehigh Valley is a quad county bi-state area as you can see here as where the last miles of the Lehigh River flows southwards, turns left and flows eastwards through 3 core cities (Allentown, Bethlehem and Easton or A.B.E.) and end at its mouth near Easton, PA and Phillipsburg, NJ meeting the Delaware River. Also, I consider the Lehigh Valley as one of 2 industrial hubs of the Keystone State bad in the old days other than Greater Pittsburgh, but nowadays, Pittsburgh is the more dominant industrial hub in the state than the Lehigh Valley. Correct me if I'm wrong.
