This is something of a Providence & Worcester mystery photo since after 39 years I can't find my notes as to the exact location. I think these M420s are working at Valley Falls, RI, but if anyone recognizes the locale more precisely I'm open to suggestions!

Photographed by Tom Nelligan, August, 1979.
Added to the photo archive by Tom Nelligan, February 26, 2018.
Railroad: Providence & Worcester.

Tom Nelligan's awards:

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