
Industrial Montana takes center stage in this mid-century survey, anchored by the massive mining operations around Butte and the smelting centers of Anaconda and Opportunity. The map documents the heavy infrastructure of the era, from the sprawling Tailings pond to the dual transcontinental rail corridors of the Burlington Northern and the Milwaukee Road. The Continental Divide carves a path through the center of the sheet, separating the mountain settlements of the Garnet Range and Flint Creek Range from the state capital at Helena. Small mining and agricultural hubs like Marysville, Deer Lodge, and Drummond line the river valleys, while the Blackfoot River and Clark Fork provide the primary drainage for the complex high-country terrain. This 1970s revision reflects the completed reaches of Interstate 90, showing the modernization of the corridor connecting Missoula to the state's interior.
77 named features on this map. Tap any name to fly to it.
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5 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