del canal / University of Texas / Fort Quitman / Austin Center / /
NaturalFeature
Living River / Scenic River / Sierra Tarahumara / Chihuahuan Desert / Forgotten River / Rio Grande / /
Organization
National Aeronautic and Space Administration / World Wildlife Fund / U.S. Department of Interior No Date / University of Texas at Austin Center for Space Research / /
Person
Oliver Wendell Holmes / Francisco Madero / Mary E. Kelly / Héctor M. Arias Rojo / /