Relief shown by color, spot heights, and land forms. ""Photoimagery rectified by optical scanning from color infrared aerial photograph taken November 13, 1983, 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 deCentro de Asesoría y Venta de Información Estadística y Cartográfica Balderas #71, Mezzanine, Mexico 1, D.F."" ""Projection and 1000-meter grid: Universal Transverse Mercator, zone 14. 10,000-foot grid ticks: Texas coordinate system, central zone. 1927 North American Datum. To place on the predicted North American Datum 1983 move the projection ticks 33 meters south and 30 meters east."" North oriented toward upper left corner. Includes location map and diagram of ""Adjoining color image map.""
Scan
Extent
Scale 1:25,000; Mercator projection (W 98°50'00"–W 98°42'30"/N 26°22'30"–N 26°15'00").