Gene Rychlak's gym is in Allentown, plus there is a private gym in Rising Sun, Maryland (just over the border from Oxford, PA) run by a guy named Marty Nickel.
He runs a website called Liftism. If you're interested just head over to the site and send him a message - his screen name is Pennsylvania Pittbull. Another option if you're near Philly is Ironsport Gym in Glenolden. A couple of very strong USAPL guys lift there.
Hope this helps.