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1957 Map of Gilmore

Name: 1957 Topographic Map of Gilmore
Creator: U.S. Geological Survey
Published: 1980
License: https://creativecommons.org/publicdomain/mark/1.0/

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.

To the south, the landscape opens into the Little River Valley, where the character of the land shifts from industrial mining to ranching and spring-fed features like Moffett Springs and Barney Summit. The presence of the Fairview Guard Station and several remote lookouts within the Salmon National Forest and Targhee National Forest highlights the administrative oversight of these timberlands. For genealogists, the Cem near Gilmore and various family-named landmarks like Moffett Creek offer specific points of interest for local history.