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1897 Map of Sonora

Name: 1897 Topographic Map of Sonora
Creator: U.S. Geological Survey
Published: 1902
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1902

About this map

Sonora and its surrounding gold country are depicted here in detail based on surveys from 1891. The landscape is defined by the deep canyons of the Tuolumne River and the North Fork Merced River, where a network of ferries and crossings such as Ward Ferry and the Moffat Bridge connected isolated mining camps and settlements. The map illustrates a transitional period in the Sierra foothills, where established towns like Coulterville and Chinese Camp operated alongside active extraction sites.

Industrial activity is prominent across the terrain, with labeled sites including the Red Cloud Mine, Bandarita Mine, and Hobron Mill. Topographical features like the prominent Table Mountain and Penon Blanco Ridge dictate the flow of travel and commerce between the river bars. Researchers can trace the early road networks that linked long-established communities like Jamestown and Bigoak Flat before the expansion of modern infrastructure in the region.