The word "New" in the title directly references the resolution of the long-standing, heavily disputed northern boundary between the United States and Canada.
The map historically illustrates multiple border proposals, including:
The 1854 publication represents State 21 of the plate, featuring updated and corrected mapping for specific local regions, such as Old Town in Penobscot County.
Prepared by Samuel Augustus Mitchell and published by the Philadelphia firm Thomas, Cowperthwait & Co. as plate no. 6 in the 1854 edition of Mitchell's Universal Atlas (frequently referenced in historical catalogs alongside his later New General Atlas series).
