Legends of Texas (1924)
“ To continue travel directly meant that they must abandon horses and use the river for transportation. It was finally decided to proceed down the river on rafts. In order to prevent their mounts from falling into the hands of Indians and being used in forays against the whites, the exploring party shot all their horses, some thirty or forty head. To this day the rugged canyon through which the Rio Grande winds its way for several hundred miles above Del Rio is called Dead Horse Canyon. [Contents] HOW THE BRAZOS RIVER GOT ITS NAME By J. Frank Dobie The Spanish word brazo means arm. ”
