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1907 Map of Tesla

Name: 1907 Topographic Map of Tesla
Creator: U.S. Geological Survey
Published: 1929
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1929

About this map

The ridge and canyon country of the Diablo Range dominates this 1907 survey, which captures the industrial activity centered at Corral Hollow. This corridor served as a hub for mining and manufacturing at the turn of the century, evidenced by the clustered settlements of Tesla, Pottery, and Carnegie. The presence of a Gravel Pit and the Western Pacific rail line through this narrow pass underscores the area's role as a vital resource artery connecting the Livermore Valley with the San Joaquin Valley.

Away from the industrial hollow, the landscape transitions into a series of prominent elevations including Crane Ridge, Cedar Mountain Ridge, and Valpe Ridge. These heights are punctuated by seasonal water sources and springs such as Mendenhall Springs and Sweet Springs, which likely served as critical landmarks for local ranchers. To the northwest, the map documents the early footprints of Altamont, Greenville, and Ulmar, situated along the rail lines that defined the region's transport network before the advent of modern highways.