The Boulder River cuts a deep path through Jefferson County, anchoring the settlements of Basin and Bernice in this high-altitude landscape. Dominated by the Deerlodge National Forest, the terrain is defined by a dense network of gulches and peaks, including Rocker Peak and Jack Mtn. The transport corridors follow the natural topography, with Boulder River Rd and Frontage Rd tracing the river valley while more remote routes like Basin Creek Rd and Jack Creek Rd climb into the timbered interior.
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This is the sole edition of this map. No revisions or reprints were ever made.
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Boulder
USGS Topo · 1:125,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1950 · Jefferson City
USGS Topo · 1:62,500
1954 · Elk Park
USGS Topo · 1:62,500
1954 · Basin
USGS Topo · 1:62,500
1954 · Boulder
USGS Topo · 1:62,500