Jack R. Williams, The Indians of Carlsbad Caverns National Park
“ Undoubtedly many migrations over a long period of time were made by various small groups of peoples. These first people were nomadic followers of game and perhaps gatherers of seeds. Steadily moving southward, they eventually reached what is now southeastern New Mexico and north and west Texas. How long they lived here, where they went and who their ancestors were are unknown. Theory plus material evidence suggest that they may have evolved into what archaeologists call the Cochise complex to Basketmaker to Pueblo, with deviations in all groups. ”
