Colton's railroad & township map of Massachusetts, Rhode Island and Connecticut : with parts of Maine, New Hampshire, Vermont & New York.G.W. & C.B. Colton & Co1886"Entered according to Act of Congress in the Year 1860 by J.H. Colton in the Clerks Office of the District Court for the Southern District of New York."Inset: British Provinces. Scale [ca. 1:1,850,000].Prime meridians: Greenwich and Washington, D.C.Relcartographic