I'm not sure now what the occasion was, but this New England Southern train at Concord, NH, was obviously some sort of special excursion run complete with balloons. NES Alco S1 was a former Portland Terminal unit.

Photographed by Tom Nelligan, June 21, 1985.
Added to the photo archive by Tom Nelligan, February 28, 2019.
Railroad: New England Southern.

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