Faithful1, I believe this theory of Frank Strongy Ferraro being the Underboss of the Outfit came from Bill Roemer's book (the F.B.I. agent who also said Joe Ferriola was the Top Boss of the Outfit in 1986 LOL). I will explain why Roemer had this idea in his head. Roemer did not completely understand how the very secretive Outfit was Structured. He tried to make the Outfit be structured like New York which was very inaccurate. Frank Ferraro was a made guy and an Outfit 'specialist'. He reported directly to the Top Boss in the Outfit. Before Giancana, he reported to Ricca. 'Specialists' are made guys who do not necessarily belong to one of the Street Crews. They are MADE MEN who the Top Boss may inherit from the previous Top Boss. These men are usually political Specilaists who deal with all the Crew Bosses and sometimes the other made men in the Outfit across the board. They are very valuable men. Frank Ferraro was a political specialist and made man. He was not the Underboss of the entire Outfit. There was no underboss of the Entire Outfit during the Giancana reign.