Columbia subject headings:
Harvard subject headings:
Canada--Boundaries--United States.
Great Britain. Treaties, etc. 1814 December 24.
Northeast boundary of the United States.
Passamaquoddy Bay (N.B. and Me.)
United States--Boundaries--Canada.
Princeton subject headings:
Canada--Boundaries--United States.
Northeast boundary of the United States.
Passamaquoddy bay.
United States--Boundaries--Canada.