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1955 Map of Mount San Antonio

Name: 1955 Topographic Map of Mount San Antonio
Creator: U.S. Geological Survey
Published: 1961
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1961

About this map

Mount San Antonio, often referred to as Old Baldy, dominates this high-altitude landscape within the San Gabriel Mountains of the mid-1950s. The survey captures a network of rugged canyons and ridges at the border of Los Angeles and San Bernardino Counties, where recreation and industry intersect. Scattered across the steep terrain are several high-elevation mining claims, including the Big Horn Mine near Vincent Gulch and the Native Son Mine on the northern slopes.

Lower-lying areas and canyon floors show the established presence of summer camps and ranches, such as Widman Ranch and Camp Maria Stella. The northeastern corner transitions into the settlement of Wrightwood in the Swarthout Valley, serving as a gateway for travelers on the Pacific Crest Highway. This survey provides a distinct record of the primitive roads and trails that connected these remote outposts before modern infrastructure further altered the backcountry access points.