
Phoenix and its eastern neighbors Tempe, Mesa, and Chandler appear here during a period of significant mid-century expansion into the Salt River Valley. The agricultural grid south of the Salt River contrasts with the surrounding desert and mountain terrain, anchored by the massive Williams AF Base and Arizona State College. The landscape is defined by extensive water management infrastructure, including Roosevelt Lake and San Carlos Lake, which supported both irrigation and the growing metropolitan area. To the east, the copper industry drives the economy of the Pinal Mountains, where major operations like the Inspiration Mine and Magma Mine are clustered near Miami and Globe. This survey documents the transition from a traditional mining and ranching economy toward the modern urban sprawl that would eventually connect these once-distinct valley settlements.
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1886 · St Johns
USGS Topo · 1:250,000
1886 · Holbrook
USGS Topo · 1:250,000
1887 · Verde
USGS Topo · 1:250,000
1887 · Prescott
USGS Topo · 1:250,000
1892 · Verde
USGS Topo · 1:250,000
1892 · St Johns
USGS Topo · 1:250,000
1892 · Prescott
USGS Topo · 1:250,000
1893 · Holbrook
USGS Topo · 1:250,000
1900 · Florence
USGS Topo · 1:125,000
1901 · Globe
USGS Topo · 1:62,500