The third annual Aquinnah Youth Powwow on Sunday will have an Ivy League flavor. Not that Polos and Dockers will replace traditional breech clouts and jingle dresses, but this year the event, hosted by the Wampanoag Tribe of Gay Head (Aquinnah), will include 120 graduate students from the Kennedy School of Government at Harvard, courtesy of Tobias Vanderhoop, a prime mover in this event produced by tribal young people.

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