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1924 Map of Signal Peak

Name: 1924 Topographic Map of Signal Peak
Creator: U.S. Geological Survey
Published: 1924
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1924

About this map

The Casa Grande National Monument anchors the northeastern corner of this desert landscape, where the ancient history of the Gila Valley meets the agricultural and industrial expansion of the early 1920s. Centered on the Sacaton Mountains, the map reveals a critical infrastructure network defined by the Casa Grande Florence Canal and the Southern Pacific railroad. These features support a string of early settlements, including Arizola, Toltec, and Eloy, which appear alongside rural educational sites like Selma School and Pinal School.

High desert topography is marked by the prominence of Signal Peak and the rugged Casa Grande Mountains to the southwest. Significant indigenous landholdings are documented through the Gila River Indian Reservation and the Papago Ind Res. Economic activity beyond farming is evidenced by the American Boy Mine, while the Florence Road and Tucson Road outline the primary overland travel routes through Pinal County during this era.