Challis National Forest land dominates this high-elevation terrain in Custer County, defined by a complex network of drainages and naming conventions that reflect early ranching or exploration. Central to the area is Jeffs Flats, a distinctive high plateau situated between the headwaters of Jeffs Cr and the deep incisions of Challis Cr. The presence of Slab Barn Lake in the southwest corner suggests historic cattle or sheep operations near Big Hill Gulch, where seasonal water sources were vital for livestock.
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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 · Bayhorse Lake
USGS Topo · 1:24,000
1963 · Bayhorse
USGS Topo · 1:24,000
1963 · Clayton
USGS Topo · 1:62,500
1963 · Lone Pine Peak
USGS Topo · 1:62,500