Post route map [of the states of] New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, and parts of New York and Maine / designed and constructed under the orders of Postmaster General Wm. Dennison and Second Ass't Postmaster Gen'l Geo. Wm. MNicholson, Walter L19--?].Includes table "Explanation of mail services."Photostat of original 1866 map, reduced size, with color ms. notes.cartographic