I had a Cousin ,who was a Brakeman on the Pennsy, in the Erie,Pa. yards. He finished his career as a Conductor on the Penn Central or Conrail.One time ,he told me to come down to the yards, and he would give me a ride. Unfortunately, I never took him up on it. He has since passed on.
Back in the 60's or early 70's, my Father was friends with an older Gentleman, who was a retired Pennsy Passenger Engineer ,who worked the Erie-Emporium runs. My Father was always trying to get me to go visit him, and talk railroading. Being a young know-it-all, I never got over to visit him, something I've always felt kind of sorry about. I did meet him once, but we didn't get a chance to talk much, then. We should never put off what we can do now, I guess.
The rail museum, in Altoona, has a nice area where you can look up Pennsy employees names in a sort of computer file system, with info on when and where they worked. Also, you can add info on family members not listed. Worth looking into.