The United States of America Estados Unidos Mexicanos international border defines the southern edge of this quadrangle, where the high desert terrain of Santa Cruz County meets the Mexican frontier. The landscape is marked by the mining and ranching heritage of the Oro Blanco district, including the namesake settlement and the Old Glory mine and settlement to the southeast. Steep drainages like California Gulch, Scribner Gulch, and Tres Amigos Gulch cut through the foothills of Bartlett Mtn and Cobre Mtn, illustrating the complex topography that once drew prospectors to these canyons. Numerous water features, such as Cemetery Tank near El Oro Cem and Japanese Tank in Japanese Valley, signify the vital infrastructure required for survival and industry in this arid environment. The map also traces the Pima Co Santa Cruz Co line as it traverses the western ridges near Cañoncito.
46 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Arivaca
USGS Topo · 1:125,000
1921 · Old Glory
USGS Topo · 1:125,000
1939 · Tubac
USGS Topo · 1:62,500
1941 · Arivaca
USGS Topo · 1:62,500
1942 · Ruby
USGS Topo · 1:62,500
1942 · Oro Blanco
USGS Topo · 1:62,500
1943 · Arivaca
USGS Topo · 1:62,500
1943 · Old Glory
USGS Topo · 1:125,000
1943 · Tubac
USGS Topo · 1:62,500
1944 · Oro Blanco
USGS Topo · 1:62,500