Colton's township and railroad map of the United States of America including a large portion of Canada ... &c ... compiled from surveys in the U.S. Land Office and other authentic sources.
Colton, Joseph Hutchins.
New York :  J.H. Colton, 
1863.
Inset: Map of North America. In margins: Harbour views of the principal cities (on both sea coasts and rivers).
M.S. additions - isotherms (mean annual), sea routes.
Prime meridian - Washington.
Shows Base, Meridian and Township lines.