The San Gorgonio Pass serves as a critical geographic gateway, illustrated here during a period of modern infrastructure development. The settlement of Cabazon occupies the floor of this narrow corridor, while the city of Banning expands along the western edge near the Banning Municipal Airport. The landscape is defined by the braided channels of the San Gorgonio River and numerous drainage systems like Potrero Cr and Hathaway Cr that descend from the surrounding highlands. Evidence of mountain infrastructure is visible at the East Portal Adit and the Barker Peak Lookout, which surveys the high ground near Barker Peak. Between the primary towns, the small siding of Owl sits along the transportation spine. North of the developed corridor, the terrain transitions into complex canyon systems including Millard Canyon and Wood Canyon.
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This is the sole edition of this map. No revisions or reprints were ever made.
1901 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1901 · San Jacinto
USGS Topo · 1:125,000
1902 · San Gorgonio
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1940 · Palm Springs
USGS Topo · 1:62,500
1942 · Banning
USGS Topo · 1:62,500
1943 · Banning
USGS Topo · 1:62,500
1944 · Palm Springs
USGS Topo · 1:62,500
1947 · Santa Ana
USGS Topo · 1:250,000
1949 · Santa Ana
USGS Topo · 1:250,000