Frank wrote:Did NYC ever use E units in commuter service?
See my comment above, which is: "Also, I remember at the beginning of PC in early 1968 one pair of NYC E-7 locomotives assigned to a Harlem commute run. it was the first time for years that anything but RS-3s had run there."
I am less familiar with what ran on the Hudson. I would bet it was likely some E units operated on the Hudson in commuter service although I don't know for sure.
RE the Put: the comment that the Lima RS's had a short "tenure" on the Put is correct ---- probably only a year or so, I understand. However, they weren't replaced with Alco's outright. Photos of the mid 50s show mostly Baldwin RS-12s.