. . "Canada" . . "United States" . . "Northern boundary of the United States." . . "ProQuest Co." . . "Joint Commission under 6th and 7th Articles of the Treaty of Ghent." . . . . . "From the St. Lawrence to Lake Superior Peter Buell Porter, the Anglo-American Joint Commission of 1816-1822 and the charting of the Canadian-American boundary" . . . . . . "From the St. Lawrence to Lake Superior; Peter Buell Porter, the Anglo-American Joint Commission of 1816-1822 and the charting of the Canadian-American boundary"@en . . . . . .