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1919 Map of Custer

Name: 1919 Topographic Map of Custer
Creator: U.S. Geological Survey
Published: 1964
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1964

About this map

Mining and mountain hydrology dominate this survey of the Salmon River headwaters and the high peaks of the Sawtooth Mountains. The Yankee Fork serves as a corridor of early industrial activity, linking the settlements of Custer and Bonanza near the Sunbeam Mine. Along the main river, the Sunbeam Dam and the Fisher Mill represent the infrastructure required to power and process the region's mineral wealth.

Further west, the Stanley Basin provides a flatter geographic contrast, anchored by the settlement of Stanley and the Valley Creek Ranger Station. The map captures the transition from high-altitude wilderness in the Challis National Forest to active resource extraction sites. Researchers can trace early pack trails and transport routes through Decker Flat and past the remote Obsidian station, while mountain landmarks like Patterson Peak and Mt Estes frame the deep drainage systems of the Idaho backcountry.