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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 Gila River Indian Reservation dominates the northern reaches of this Pinal County landscape, where the jagged rises of the Sacaton Mountains and landmarks like Signal Peak and Black Butte break the desert floor. In the south, the Southern Pacific Railroad cuts a straight diagonal through the terrain, anchoring the development of early rail-side communities including Arizola, Toltec, and Eloy. The irrigation of the arid flats is documented through the path of the Casa Grande Florence Canal, a vital artery for the region's agricultural growth.

Near the town of Casa Grande, the local economy and social structure are reflected in the presence of the American Boy Mine and a network of rural education sites like Signal Peak School and Selma School. The northeast corner highlights the Casa Grande National Monument, while ephemeral watercourses such as Mc Clellan Wash and the North Branch Santa Cruz Wash reveal the natural drainage patterns that shaped the placement of the Florence Road and other early transit corridors.