
Boulder serves as the focal point of this Jefferson County landscape, where the Boulder River and Great Northern railroad line converge. The map documents a significant era for the Montana State Training School and the established thermal waters at Boulder Hot Springs. High-country mining history is evident through numerous prospects and operations such as the May Day Mine, Smiley Mine, and the historically significant Chinese Diggings north of the river. The terrain transitions from the valley floor to the prominent heights of Mt Pisgah and Bull Mountain, with the vast Deerlodge National Forest covering much of the western and southern reaches. Scattered throughout the mountain parks and gulches are seasonal outposts and family holdings, including the McCauley Ranch and Keogh Ranch, illustrating the region's enduring reliance on both ranching and mineral extraction.
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4 editions found
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 · 1:250,000
1903 · Helena
USGS Topo · 1:250,000