http://www.ushistory.org/penn/penn_journey.htm
In 1783, Ezra Stiles, President of Yale University, proposed that tribes from Tartary had entered America:
“…another branch of the canaanitish expulsions might take the resolution of the ten tribes, and travel north-eastward to where never man dwelt, become the …Tartars… in the north-east of Asia: thence, by water, passing over from island to island through the northern Archipelago to America, became the scattered Sachemdoms of these northern regions.”