
Challis National Forest dominates this mid-century survey, revealing a landscape defined by deep mining history and high-altitude wilderness. The settlement of Clayton sits at the confluence of the Salmon River and its east fork, serving as a hub for the surrounding mineral claims. Evidence of the area's industrial past is visible through the tramway and tailings pond near the Clayton Mine, while high-country operations like the Ramshorn Mine, Pacific Mine, and Keystone Mine are accessed via a network of steep trails.
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This is the sole edition of this map. No revisions or reprints were ever made.
1919 · Custer
USGS Topo · 1:125,000
1922 · Custer
USGS Topo · 1:125,000
1929 · Bayhorse
USGS Topo · 1:125,000
1930 · Casto
USGS Topo · 1:125,000
1956 · Challis
USGS Topo · 1:62,500
1956 · Twin Peaks
USGS Topo · 1:62,500
1957 · Challis
USGS Topo · 1:250,000
1960 · Challis
USGS Topo · 1:250,000
1963 · Challis
USGS Topo · 1:250,000
1963 · Challis Creek Lakes
USGS Topo · 1:24,000