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1988 Map of Illinois Peak
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1988 Map of Illinois Peak

USGS Topo · Published 1988

About this map

The high Bitterroot Divide defines this 1988 survey, marking the state line between Shoshone County, Idaho, and Mineral County, Montana. This high-altitude landscape is dominated by the intersecting boundaries of the Lolo National Forest, St Joe National Forest, and Clearwater National Forest. Exploration and extraction have left a clear mark on the terrain, evidenced by several mining sites like the Gildersleeve Mine, Amador Mine, and Cinkers Mine, alongside numerous unnamed prospects and adits concentrated around Snowshoe Gulch.

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Map Details

Date Portrayed1988
Date Published1988
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1988 Illinois Peak Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Shoshone County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain