You're going to have a tough time finding books on the Unione Corse. They are much more secretive than the classic Italian mafia and haven't been infiltrated to the extent that the Italians have. If anything the Unione has infiltrated French law enforcement. They have a code similar to Omerta, but take it much, much more seriously. Their families are more like clans. The Frenchies supposedly make use of the Unione Corse from time to time. TIME did an article in '72 on the Unione, link below.http://www.time.com/time/magazine/artic ... -1,00.html
Your best bet is to research specific people, but that is kind of like the Kyser Soze factor. Somebody knew a guy, who knew a guy, who knew a guy who worked for the Corsicans. Here's a few: Antoine Guerini, Auguste Ricord, Christian David, Lucien Sarti
EDIT: Sarti is known in some conspiracy circles as the "Grassy Knoll" shooter. Yes that Grassy Knoll. True/False: who the fuck will ever know. Sounds cool though Corsican assassins/smugglers involved with the JFK hit. Ok I'll quit lest this gets moved to the TFHC.
"I am content to die as are all our comrades. But I will not let myself be slaughtered like a sheep. I would rather face the blow. Strike straight at my face and watch carefully if I pale at all.”