Wells, J.,  and Phelps & Ensign.  "Phelps & Ensign's travellers' guide, and map of the United States, containing the roads, distances, steam boat and canal routes &c."  Map.  1840.  Norman B. Leventhal Map Center,  https://collections.leventhalmap.org/search/commonwealth:wd376211z (accessed February 21, 2018).