
The Continental Divide dictates the rugged character of this region at the turn of the century, separating the headwaters of the Blackfoot River from the urban centers of Helena and Butte. This 1:250,000 scale map reveals a landscape defined by mining and early rail infrastructure, featuring the Northern Pacific Railroad and the Great Northern Railway as they navigate high mountain passes like Mullan Pass and Priests Pass.
123 named features on this map. Tap any name to fly to it.
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4 editions found
1886 · Great Falls
USGS Topo · 1:250,000
1886 · Fort Logan
USGS Topo · 1:250,000
1888 · Three Forks
USGS Topo · 1:250,000
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1893 · Dillon
USGS Topo · 1:250,000
1894 · Three Forks
USGS Topo · 1:250,000
1895 · Three Forks
USGS Topo · 1:250,000
1899 · Boulder
USGS Topo · 1:125,000
1899 · Helena
USGS Topo · 1:62,500