Laurie Wilkie did her dissertation (UCLA) on just such a community in
Louisianna. I have forwarded the details to her.
DISSERTATION
Wilkie, Laurie A., 1968-
"Never leave me alone" : an archaeological study of African-American
ethnicity, race relations and community at Oakley Plantation / by Laurie A.
Wilkie. 1994.
UCLA URL LD 791.9 A67 W653