Norton Port of Entry

1978

1:25k

Sherbrooke

1986

1:100k

Sherbrooke

1986

1:100k

West of Norton Port of Entry

1978

1:25k

(General geological map of New Hampshire. Sheet 1)

1878

New Hampshire. Geological Survey

1:155k

Plate 93. International Boundary Disputes. Connecticut River. Lake of the Woods. The Forty-Fifth Parallel, etc.

1932

Wright, John K.

Sherbrooke

1976

1:250k

Sherbrooke

1966

1:250k

Jackman

1963

1:250k

Jackman

1949

1:250k