Not so much about the scene as the history of RnB in Louisiana, the first one I ever read was "Walking To New Orleans" by John Broven (1974)
and which has since been republished as "The Story of New Orleans Rythm and Blues" by Pelican.
The focus is gaining some recognition for the lesser known artists of the area and mentions artists such as the Montclairs, George Davis, Alvin Red Tyler, Aaron Neville, et al and labels like Parlo, as well as Fats Domino.
(The copy I read C'76 had been "borrowed" from Oldham Library.......wonder how much Scally's fine will be when he takes it back?)