Santa Cruz Valley USGS Topographical Maps
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1904 Nogales, Arizona
1904 Patagonia, Arizona
1904 Tucson, Arizona
1920 Arivaca, Arizona
1925 Samaniego Peak, Arizona
1926 Helvetia, Arizona
1939 Twin Buttes, Arizona (Light)
1939 Twin Buttes, Arizona (Dark)
1940 Palo Alto Ranch, Arizona
1941 Baboquivari Peak, Arizona
1941 Twin Buttes, Arizona
1942 Oro Blanco, Arizona
1948 Twin Buttes, Arizona (Light)
1948 Twin Buttes, Arizona (Dark)
1957 Twin Buttes, Arizona, 1
1957 Twin Buttes, Arizona, 2
1957 Twin Buttes, Arizona, 3
1957 Twin Buttes, Arizona, 4
1957 Twin Buttes, Arizona (Dark)
1958 Sahuarita, Arizona (Medium)
1958 Sahuarita, Arizona (Dark)
1958 Sahuarita, Arizona (Light)
