If I recall correctly from an article in July 1965 TRAINS (the first issue that I bought), no equipment laid over at Peekskill.
Regardless of what the article said, in the steam era, the MUs that were hauled by steam north of Harmon, definitely spent their nights and Sundays in Peekskill. Not certain about the locomotives. I’ll check on that.
Just what era did the Trains article discuss?
The article would be correct for 1965.
How were they heated in the winter when not in electrified territory?