@ Madbull - He was close to Jimmy Clemenza as a moneymaker but wasn't apart of his "CREW" but more like a business friend.

@ Wilson - Many people in that life have been interviewed and have remarked that they did do a good impression even in 1972, Marlon Brando did an amazing impression of them all. The Media was just learning about La Cosa Nostra after Joe Valachi became a "RAT" and so that I have heard, ever informant or FBI agent have said that Brando did a good performance same as Sonny Corleone (James Caan). I really didn't know before that Persico became a friend with Caan and Caan established small crime operations for the Colombo family. Tom Hagen also said that he used to go to Persico's court trials and would watch how he walked and stood ETC.. Anthony Quinn also went to court cases including John Gotti's famous trial and learnt so much.