Daniel Usner, <Indians, Settlers and Slaves in a Frontier Exchange
Economy> 1992
He is a professor in the History Department at Cornell University. He
is from Louisiana.
John R. Swanton, Indian Tribes of the Lower Missippi Valley and
Adjacent Coast of the Gulf of Mexico, circa 1911, Washington GPO
Smithsonian Institution, Bureau of American Ethnology, Bulletin 43
Lawrence Aten, Indians of the Upper Texas Coast, 1983
All of these books contain info re the Atakapa. I got this info from
Professor Daniel Usner.
Happy reading!
Alyce