Lewis Henry Morgan,
Houses and House-Life of the American Aborigines
(1877)
“ The first two classes of tribes always held the preponderating power, at least in North America, and furnished the migrating bands which replenished the ranks of the Village Indians, as well as the continent, with inhabitants. It remained for the Village Indians to invent the process of smelting iron ore to attain to the Upper Status of barbarism, and, beyond that, to invent a phonetic alphabet to reach the first stage of civilization. One entire ethnical period intervened between the highest class of Indians and the beginning of civilization. ”
