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1949 Map of Cosio Knob

Name: 1949 Topographic Map of Cosio Knob
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

The Hunter Liggett Military Reservation dominates this 1949 topographic survey of southern Monterey County, illustrating the intersection of military training grounds and Spanish-era heritage. At the southern edge, the San Antonio Mission stands near the San Antonio River, providing a critical waypoint for those tracing the history of the California missions. The landscape is defined by the steep elevation of the Oat Hills and the prominent Cosio Knob, with numerous canyons like Quinado Canyon and Mansfield Canyon cutting through the terrain.

Transportation in the mid-century is centered on Jolon Road and Del Venturi Road, which connect the valley floors. Evidence of earlier habitation is noted near the Jolon Creek valley where Ruins are indicated, while an Airfield reflects the more modern military requirements of the era. This map is a significant resource for genealogists and researchers exploring the development of the Jolon Valley area before the expansion of modern infrastructure.