The Twentieth Century Mill stands as a testament to the industrial history of this mountainous region of Idaho, situated at the headwaters of Threemile Cr. This high-altitude landscape is dominated by notable summits such as Rainbow Peak, Thunder Mtn, and Lightning Peak, which define the rugged divide between the drainage of Monumental Cr and the waters of Big Cottonwood Cr. The survey highlights a terrain where mining and exploration left their mark on landforms like Gold Ridge and Dewey Hill.
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This is the sole edition of this map. No revisions or reprints were ever made.
1937 · Yellow Pine
USGS Topo · 1:48,000
1937 · Big Creek
USGS Topo · 1:48,000
1942 · Big Creek
USGS Topo · 1:62,500
1943 · Yellow Pine
USGS Topo · 1:62,500
1956 · Elk City
USGS Topo · 1:250,000
1957 · Challis
USGS Topo · 1:250,000
1960 · Elk City
USGS Topo · 1:250,000
1960 · Challis
USGS Topo · 1:250,000
1963 · Challis
USGS Topo · 1:250,000
1969 · Edwardsburg
USGS Topo · 1:24,000