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

International Boundary, From the St. Lawrence River to the Source of the St. Croix River, Sheet No. 7

1923

International Boundary Commission

1:24k

Sherbrooke

1976

1:250k

Sherbrook

1976

1:250k

Sherbrooke

1966

1:250k

Jackman

1963

1:250k