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1927 Map of Glendora

Name: 1927 Topographic Map of Glendora
Creator: U.S. Geological Survey
Published: 1927
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1927

About this map

The citrus groves and foothills of the San Gabriel Valley appear here during a period of transition between agricultural dominance and suburban growth. The city of Glendora is the central hub, situated where the Pacific Electric and Atchison Topeka and Santa Fe rail lines converge. To the south, San Dimas and Charter Oak are established as distinct settlements, connected by a dense grid of local thoroughfares like Bonita Avenue and Foothill Boulevard.

The landscape is defined by the prominent South Hills and the transition into the Angeles National Forest to the north. Water management is evident through the courses of Big Dalton Wash and Little Dalton Wash, which descend from canyons such as Englewild Canyon. Educational and civic life is anchored by Citrus Union High School and the Glendora Ranger Station, illustrating the region's early 20th-century development as a key residential and agricultural corridor east of Los Angeles.