One item not listed on PIMT's manifest was a hobo riding this train.
Westbound SEAL-1 (Selkirk Yard, NY, to Allentown, PA) approaches the end of double track behind Conrail SD45 6130, GP35 234; and SD40 6304 on the Lehigh Line at West Portal, New Jersey, USA, 11 October 1981.
At least I can stinl find some Blue Units somewhere,like my photo collection.