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1912 Map of Mariposa

Name: 1912 Topographic Map of Mariposa
Creator: U.S. Geological Survey
Published: 1938
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1938

About this map

Mariposa Grove Big Trees Yosemite Natl Park marks the northeastern corner of this Sierra Nevada landscape, surveyed during the first decade of the 1900s. The region is defined by a dense network of mining operations and remote settlements, including Coarse Gold, Fresno Flats, and Happy Camp. Industrial markers like the Buchanan Mine, Texas Flat Mine, and a Marble Quarry near Knowles indicate a busy extraction economy operating alongside the Pacific railroad line.

Water management and early infrastructure are evident at the Crane Valley Reservoir and the Powerhouse on the North Fork. The map also captures several family ranches and historic sites such as Adobe Ranch, Hills Ranch, and the site of Old Fort Miller along the San Joaquin River. Numerous rural schools like Indian Peak School and Iron Mtn School provide specific points of interest for genealogists tracing early California residents.