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1957 Map of Gilmore, 1980 Print
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1957 Map of Gilmore

USGS Topo · Published 1980

About this map

The settlement of Gilmore and its surrounding mining district dominate this mid-century survey of the Lemhi Range. High-altitude mining operations are concentrated on the eastern slopes of Portland Mtn, where a cluster of sites including the Portland Mine, Latest Out Mine, and Mountain Boy Mine mark the industrial activity of the era. The infrastructure of earlier extraction is visible in the Gilmore and Pittsburgh Railroad (Abandoned Grade), which provides a historical record of the logistical challenges in transporting ore from these remote peaks to the valley floor.

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Map Details

Date Portrayed1957
Date Published1980
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions18 x 21.7 inches

Editions of this 1957 Gilmore Map

Historical Maps of Custer County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain