The Rio Grande makes a large bend into Mexico and forms the "boot heel" of Texas that is the Big Bend. Big Bend National Park nestles inside this meander, and its history is as much a part of Mexico as it is of Texas. The remote border location is historically replete with rich cultural diversity, including nomadic bands of Native Americans, Spanish explorers, Mexican and Anglo farmers, ranchers, miners, military men, and entrepreneurs. In the 1930s, a handful of people saw the Big Bend's majestic ruggedness as a place where all Americans could touch the Creator in nature and appreciate the...