
Lemhi Pass marks the high-altitude boundary between Idaho and Montana, bisecting the Salmon National Forest and Beaverhead National Forest along the Continental Divide. This 1965 survey, updated through 1984, documents a landscape shaped by early Western migration and natural resource extraction. The northern portion of the map features the Sacajawea Memorial Camp, a significant commemorative site at the divide.
28 named features on this map. Tap any name to fly to it.
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3 editions found
1955 · Dubois
USGS Topo · 1:250,000
1955 · Dillon
USGS Topo · 1:250,000
1956 · Goldstone Mtn
USGS Topo · 1:62,500
1956 · Lemhi
USGS Topo · 1:62,500
1957 · Dillon
USGS Topo · 1:250,000
1958 · Dubois
USGS Topo · 1:250,000
1958 · Dillon
USGS Topo · 1:250,000
1962 · Dillon
USGS Topo · 1:250,000
1965 · Dillon
USGS Topo · 1:250,000
1965 · Lemhi Pass
USGS Topo · 1:24,000