
Altamont Pass serves as the dominant geographical gateway between the Livermore Valley and the San Joaquin Valley, where the Western Pacific and Southern Pacific railroads navigate the complex terrain. The landscape is defined by its industrial and hydraulic infrastructure, featuring the convergence of the California Aqueduct and the Delta-Mendota Canal. This 1953 survey, updated with 1968 photorevisions, provides critical documentation of the region's historical industrial sites in Corral Hollow. Researchers can identify the footprints of former operations at Tesla (Site), Pottery (Site), and Carnegie (Site), marking where coal mining and brick manufacturing once thrived. Smaller transit points like Mountain House, Cayley, and Midway highlight the settlement patterns that evolved around these vital rail and water corridors.
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6 editions found
1907 · Tesla
USGS Topo · 1:62,500
1911 · Byron Hot Springs
USGS Topo · 1:31,680
1914 · Bethany
USGS Topo · 1:31,680
1914 · Union Island
USGS Topo · 1:31,680
1916 · Byron Hot Springs
USGS Topo · 1:31,680
1916 · Byron
USGS Topo · 1:62,500
1916 · Tracy
USGS Topo · 1:31,680
1916 · Midway
USGS Topo · 1:31,680
1922 · Carbona
USGS Topo · 1:62,500
1940 · Byron
USGS Topo · 1:62,500