I saw stenciled former PC locos in service on the NY&LB into the early 1980's. GP38s I believe. Bob knows much better than I do as he was photo documenting this era, while I was more of a teenage spectator as I never managed to have my camera when I saw a freight on the NY&LB.
One great resource for Conrail roads in predecessor paint schemes was early issues of Railpace Magazine. My dad started collecting that magazine with the first issue in 1982 and is still a subscriber. In the early issues they would print photos of CR inherited locomotives in their former paint. One that stuck out was CNJ SD40 3067 photographed in Chicago. CNJ 3067 was the only SD40 that got the "Red Baron" or "Coast Guard" paint scheme. In the photo, it had a new number and miss liberty was painted over. This was probably 1983???
Conrail also continued to operate some commuter routes into the late 70's so there were some interesting paint schemes there are well. The most notable one off the top of my head was the PC / MTA blue and yellow scheme on the FL9s. On the NY&LB it translated to CR stenciled former CNJ passenger geeps and stenciled former PC E7/E8s.
