AMS 3974 III--series V794.
Relief shown by contours and spot heights.
Forested areas overprinted in green.
1940
Surveyed in 1937, 1938, and 1940.
1927 North American datum.
N4500--W11015/15.
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.