I'm not sure this is what you're looking for, but I read "Life by the Tracks," by Virginia Downs a couple years ago, and it was really good.
It's about the Crawford Notch railroad trestle way up there and the family that lived there for most of its existence.
It's available through the NH library system, but there's some info and reviews here: Life by the Tracks (New Hampshire - Crawford Notch)): When Passenger Trains Steamed Through the Notch
https://a.co/d/120t8eP
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