You may well be right. I notice in R. W. Nimke's book, "Rutland, 60 years of Trying;Vol 4", there is a combine just ahead of the caboose on the local freight heading up from Chatham to Rutland.
The photos were taken on Aug 15, 1952, just two days before I was born. Ironically, the consist also is pulling three brand-new Alco RS-3's, which will soon replace the steam locomtive on the front.
I would suspect the milk trains might be the reason the Corkscrew Division lasted as long as it did.