The Stephen Greene Press of Brattleboro, Vermont which might be history at this point published a series of small books about various railroads of New England and the northeast mostly. Most of these books were very well done with some good photos too. I suspect all of them are probably out of print but they might be found somewhere. One of them was "36 Miles of Trouble" which dealt with this historic railroad from start to finish. If you are able to locate one I think anybody interested in this subject would enjoy having it and reading it.