Relief shown by spot heights. "Photoimagery rectified by optical scanning from color infrared aerial photograph taken ... by the Dirección General de Geografía del Territorio National (DGGTN), Mexico D.F., Mexico." "For sale by U.S. Geological Survey, Denver, Colorado 80225, or Reston, Virginia 22092 and by Centro de Centro de Asesoria y Venta de Información Estadística y Cartográfica Balderas #71, Mezzanine, Mexico 1, D.F." Each sheet separately titled and numbered. Available also through the Library of Congress Web site as a raster image. Includes location map and diagram of "Adjoining color image map."
Geological Survey (U.S.); U.S. Customs Service; Mexico. Dirección General Geografía De Territorio National
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