Pam:
 
I know both Todd Boyd and Jane Gaines are working on this topic,
although I don't know what they've published.  I'd look for their
recent work.
 
Also, Manthia Diawara has a new book on Black American Cinema
that should be a good reference.
 
Good luck!
 
Sarah Projansky
Middlebury College
Middlebury, VT  05753
 
(802) 388-3711