Wow! Lots of good information! Thank you all for your time and information. I appreciate it very much.
The Landmesser hot box list for 48-49-50 includes 68 PRR cars and 57 NYC cars including 6 PMcK&Y, 6 PM and 6 PLE which I take to mean P&LE. It seems easier to find model matches for the PRR cars. The NYC and subsidiaries appear to present more of a challenge. That is why I asked all the questions.
Now I need to dig out a couple of magazine articles to which I have been referred.