Art.....I believe both did.....the O&W would start in Weehawken and then after Middletown, in Summitville, a branchline served Port Jervis and Monticello. The Erie would start out in Jersey City and head north to Suffren and Port Jervis was part of their main line west. I believe the NJTransit/Metro North commuter train to Port Jervis follows mostly the Erie route in southern NY state. By the way, those of you who used to stop at the Red Apple Rest driving to the Catskills.....it was abandoned last time I drove by a few years ago.
Peter