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1942 Map of Hesperia

Name: 1942 Topographic Map of Hesperia
Creator: U.S. Geological Survey
Published: 1942
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1942

About this map

The Atchison Topeka and Santa Fe railroad threads through this 1942 survey, marking the transition from the high desert of the Mohave Desert into the mountainous terrain of the San Bernardino National Forest. This era shows a landscape of established ranching and vital infrastructure, where the Boulder Dam Power Lines and California Nevada Power Lines intersect the arid plains near Hesperia. The southern portion of the map is dominated by the steep relief of the San Bernardino Mountains, centered around Cajon Pass and the Cajon Summit Lookout.

Local history is preserved through numerous family-named landmarks and small settlements like Cedar Springs, Cosy Dell, and the Las Flores School. The map captures a moment when the regional economy relied on the Mohave River and the high-altitude passes. Traces of early 20th-century life are evident in the scatter of rural sites such as Yucca Forest Ranch, Warner Ranch, and Applewhite Camp, documenting the area's development before the rapid expansion of the Inland Empire.