Big Bend on the Rio Grande examines the history of Texas's possessive first national park from its origins in the 1930s through developments of the 1980s. It is a story of a unique landscape and its effect on people as well as the impact of human beings on the flora and fauna of a fragile desert environment. The story involves international intrigue and border incidents, conflicts over predators, and visitor and employee experiences in the Lone Star State's last frontier. Other topics include publicity and fund raising campaigns, land acquisition, and development plans for the park. In addition, Big Bend on the Rio Grande provides a revealing case study of an important federal natural resource agency, the National Park Service.