- Connecticut, Railroad Commissioners
- Digital Commonwealth
- Boston Public Library
- W.H. Dodd & Co
Covers Connecticut, Massachusetts, Rhode Island, and part of New York. Prime meridian: Washington. Also shows steamboat routes.
- New York, New Haven, and Hartford Railroad Company
Philadelphia, Reading and New England Railroad
New York & New England Railroad
New London Northern Railroad Company
- No known copyright restrictions. This work is licensed for use under a Creative Commons Attribution Non-Commercial Share Alike License (CC BY-NC-SA).