The Montreal, Portland and Boston Railway was an international railroad located in northern Vermont and southern Quebec.
It was built from Frelighsburg, Quebec to Sheldon, Vermont in 1882. At Sheldon Junction it connected with the Portland and Ogdensburg Railroad.
Due to lack of traffic on the MP&B, the tracks were abandoned and removed the following year in 1883.
References
Montreal, Portland and Boston Railway Wikipedia(Text) CC BY-SA