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1957 Map of Illinois Peak, 1964 Print
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1957 Map of Illinois Peak

USGS Topo · Published 1964

About this map

Mining operations and major rail lines define the divide between Montana and Idaho in this mid-century survey. The northern edge of the map is dominated by the Clark Fork valley, a critical transportation corridor carrying both the Chicago Milwaukee St Paul and Pacific and the Northern Pacific railroads. This infrastructure supported a landscape of extraction, evidenced by several named claims scattered across the steep drainages, including the Amador Mine, Golden Sunset Mine, and Gildersleeve Mine. The map reveals a complex administrative boundary where Lolo National Forest, St Joe National Forest, and Clearwater National Forest converge. High-altitude landmarks like Illinois Peak and Blacktail Mountain anchor the terrain, while small alpine waters such as Bonanza Lakes and Diamond Lake punctuate the high ridges of the Mineral and Shoshone county lines.

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Map Details

Date Portrayed1957
Date Published1964
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions16.98 x 20.82 inches

Editions of this 1957 Illinois Peak Map

Historical Maps of Olsons Through Time

166 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain