On the front page of The NY Post or NY Daily news sometime back was a giant front page headline (a bit after his death) that said "KING RAT" with a picture of Sinatra under it...
The journalist allegedly had proof from the FBI (under the Freedom of Information Act), that Frank had gone to the FBI later in his life to give up all the info he had on organized crime. They flatly rejected his offer. Anyone from NY/NJ areas see that article?