
White Sulphur Springs sits at the heart of this central Montana landscape, where the high plains of the Musselshell River basin meet the massive uplift of the Lewis and Clark National Forest. The 1950s era saw significant hydraulic development along the Missouri River, notably the presence of Canyon Ferry Lake and the Canyon Ferry Dam, which reshaped the geography south of East Helena. The map reveals a region defined by its extraction history, documenting numerous workings such as the East Pacific Mine and the Sapphire Mine. Scattered rural schools like Whaley School and Settlement School underscore the era's decentralized education system. Transportation is anchored by the Northern Pacific Railway and the Chicago Milwaukee St Paul and Pacific Railroad, which serviced small outposts like Martinsdale and Lennep before the widespread decline of the mountain rail lines.
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3 editions found
1886 · Great Falls
USGS Topo · 1:250,000
1886 · Fort Logan
USGS Topo · 1:250,000
1886 · Little Belt Mts.
USGS Topo · 1:250,000
1888 · Three Forks
USGS Topo · 1:250,000
1889 · Big Snowy Mountain
USGS Topo · 1:250,000
1889 · Helena
USGS Topo · 1:250,000
1890 · Fort Benton
USGS Topo · 1:250,000
1891 · Livingston
USGS Topo · 1:250,000
1891 · Big Timber
USGS Topo · 1:125,000
1892 · Fort Benton
USGS Topo · 1:250,000