...ians of the Shoshone family who, when first known, inhabited the region from the headwaters of the Brazos and Colorado rivers to those of the Arkansas and Missouri, some of their bands penetrating to Santa Fe, in New Mexico , and to Durango, in Mexico. The Spaniards and the tribes on the central plains, like the Pawnees, felt their power in war from an early period. They called themselves by a name signifying live pe...