Map showing potential for copper deposits in the eastern three-quarters of the Nogales 2o quadrangle, Tucson area, Arizona

U.S. Geological Survey, 1973, Map showing potential for copper deposits in the eastern three-quarters of the Nogales 2o quadrangle, Tucson area, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-844-G, 1 sheet, scale 1:250,000.