
St Regis sits at the confluence of the St Regis River and the North Fork of the Clark Fork during an era of significant mineral extraction and railroad expansion. This 1919 edition, based on surveys from 1912–1916, reveals the intensive industrial footprint of the Bitterroot Mountains and Cabinet Mountains. The mountain slopes are dotted with silver and copper prospects, including the Saltese Consolidated Mine and True Fissure Mine. Transportation corridors define the settlement patterns, as the Chicago Milwaukee and St Paul and the Northern Pacific railroads compete for passage through the steep terrain. Traces of the historic Mullan Road remain visible, providing a corridor for early travel alongside modern rail lines. Remote life is documented through scattered landmarks like the Bear Spring Cabin and the St Regis Ranger Sta, highlighting the early management of the Lolo National Forest and St Joe National Forest.
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This is the sole edition of this map. No revisions or reprints were ever made.
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