Sounds like an interesting read, joey! The author seems to have covered the subject comprehensively.
You might want to check out Rich Hall's BBC film documentary "The Dirty South" which took a look at how the American South was portrayed in movies. Highly recommended. He has a respect for his subject and completely avoids the usual pitfalls and stereotypes.
http://www.bbc.co.uk/bbcfour/yoursay/dirty_south.shtml
http://www.youtube.com/watch?v=ohzWgzVruic
He also did a documentary on the Western (haven't seen that one yet), and a recent one on Road Movies - also very good.