A.W. Longfellow created this rough survey of the St. John River, from Rose Island north and east, which was part of a series completed during 1843 and 1844 under the commission established for the 5th article of the Treaty of Washington, 1842. These maps aimed to determine the northern borders of Maine, New Hampshire, Vermont, and New York. This map is part of a larger archive, the Thomas Barclay Collection (Coll. 26).

To search the entire Barclay collection visit Maine Historical Society's Beyond Borders search page. or
Learn more about the project.