Depending on the year, if I remember correctly, the PRR ran a connecting train from NYP to STL. The connecting train name was the...drum roll...SUNSHINE SPECIAL.
The SS was the main STL-TX train until the TEXAS EAGLE. For a few months, the PRR train was called the....drum roll...TE. Then the train name got changed to the PENN TEXAS.
Considering the train used STL as its northern terminal, I could see run through cars from other railroads. Head end and Pullmans come to mind. A PRR R50 refer on the head end would be a possibility, I think.
