The Tonkawa Tribe of Oklahaoma includes within their membership "...the only surviving Karankawas (a coastal tribe from Texas) and a number of people of Lipan ancestry." the Tonkawa are located near the town of the same name in Oklahoma, and hold a powwow each year in June. They have also held educational workshops in Austin, Port Lavaca, and other Texas cities, where the Tonkawa were originally from.
Anglo and Native American Confrontations
(Brazoria County Historical Museum - TX)
The Tonkawa Nation
Handbook of Texas Online: Tonkawa Indians