Babe, have you seen Francesco Rosi's docudrama Salvatore Giuliano? It's now available on dvd.

I've read his sister's book, it may be a bit of a whitewash, but maybe I'm just being cynical.

It's out of print, but you must read King Of The Mountain, by Billy Jaynes Chandler. It was written in the late 80's, and is considered to be the definitive Giuliano bio.