Mt. Wallace 1966b 15 min
Mt. Wallace, Mont.
Mt. Wallace quadrangle
Montana, Mt. Wallace quadrangle
Lewis, J. L.
45 x 33 cm.
AMS 3974 III--series V794.
Relief shown by contours and spot heights.
Forested areas overprinted in green.
Surveyed in 1937, 1938, and 1940.
1927 North American datum.
The forty-fifth degree parallel is the prescribed position of the Montana-Wyoming boundary. Within this quadrangle, the actual position as marked on the ground is unknown.
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