Yeah, try http://www.sjrail.com/schedules/schedules.html. That has pretty much everything that runs over the former PRSL in South Jersey today. As far as Mt. Laurel, which is on the former PRR Pemberton Branch...that would be CA20, usually Monday, Wednesday, and Friday. Look for them in Mt. Laurel about 2-3pm eastbound and about 6-7 westbound, all times PM.