Don Watson, Indians of the Mesa Verde
“ In 1540, when the Spaniards entered the Southwest, several tribes of nomadic Indians were warring on the Pueblo people and the population had dropped radically. When the Pueblo population was at its height there were hundreds, perhaps thousands, of villages but when the Spaniards came they found less than eighty villages of Pueblo Indians and these were concentrated in a small area in what is now New Mexico and Arizona. Even after the Americans came the population continued to dwindle. ”
