I can 99% guarantee you that no engine lies in the Merrimack River at Newburyport.
The late Harry A. Frye, former B&MRR Historical Society's historian did considerable research over the years on various "fabled" sunken locomotives and said that every B&M (or predecessor road) machine was accounted for either by sale or scrapping. Other than the well-known #3666 at Kittery, no B&M locomotive is sunk anyplace.
Time to put all these "fables" and rumors to rest.
The late Harry A. Frye, former B&MRR Historical Society's historian did considerable research over the years on various "fabled" sunken locomotives and said that every B&M (or predecessor road) machine was accounted for either by sale or scrapping. Other than the well-known #3666 at Kittery, no B&M locomotive is sunk anyplace.
Time to put all these "fables" and rumors to rest.