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1948 Map of Sonora

Name: 1948 Topographic Map of Sonora
Creator: U.S. Geological Survey
Published: 1977
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1977

About this map

The dramatic basalt cap of Table Mountain dominates the landscape of this Tuolumne County survey, winding through a terrain shaped by Gold Rush history and early transportation. Near the northern edge, the Mark Twain Cabin on Jackass Hill stands as a landmark of the region's literary and mining heritage. The area is dotted with historic extraction sites such as the Golden Rule Mine and Toledo Mine, while the Sierra Railroad snakes through the hills to serve settlements like Jamestown and Sonora.

By the mid-20th century, the landscape reflects both old mining camps and modern utility, from the established streets of Quartz and Stent to the waters of New Melones Lake and the O'Neil Reservoir. The map captures the intersection of early pioneer routes and developing infrastructure, including Yosemite Junction and the Rawhide Sch, illustrating the transition of these Mother Lode communities into the post-war era.