
The Gila and Salt River Base Line cuts across this 1930s landscape, providing a primary surveying datum for the arid expanses of what is now La Paz County. The terrain is defined by the intersections of the Trigo Mts, Dome Rock Mts, and the Mojave Range, where early routes like the Cibola Road and passages through Weaver Pass and Felipe Pass reveal the historical movement of people through the desert. Resource extraction is anchored by the Tweed Mine in the southern reaches, highlighting the region's early 20th-century mining interests.
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This is the sole edition of this map. No revisions or reprints were ever made.
1933 · Cunningham Mtn
USGS Topo · 1:48,000
1939 · Red Hill
USGS Topo · 1:62,500
1939 · Trigo Peaks
USGS Topo · 1:62,500
1940 · Dome Rock Mts
USGS Topo · 1:62,500
1942 · Blythe
USGS Topo · 1:250,000
1945 · Cibola
USGS Topo · 1:62,500
1945 · Picacho
USGS Topo · 1:62,500
1951 · Picacho
USGS Topo · 1:62,500
1951 · Blythe
USGS Topo · 1:24,000
1951 · Cibola
USGS Topo · 1:62,500