The Salmon River carves through this high-desert corridor of Custer County, shaping the settlement patterns around Challis and the agricultural expanse of Round Valley. In the northern section, the town layout of Challis is clearly defined by streets such as 10th St and 11th St, while the surrounding landscape is marked by irrigation-fed valleys and the steep drainage of Mud Spring Gulch.
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This is the sole edition of this map. No revisions or reprints were ever made.
1929 · Bayhorse
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 · Bald Mountain
USGS Topo · 1:24,000
1963 · Bayhorse
USGS Topo · 1:24,000
1963 · Little Antelope Flat
USGS Topo · 1:24,000
1963 · Clayton
USGS Topo · 1:62,500