Oil companies, pharmaceutical firms, Cosa Nostra, al-Qaeda, and the House of Saud.
“He was living in hiding, not from law enforcement, but from La Cosa Nostra,” the lawyer told the court.
Other groups include Sicily's Cosa Nostra and Calabria-based 'Ndrangheta.
Here is the best book I have read on the role of organized crime in southern Italy, John Dickie's Cosa Nostra.
Cosa Nostra is a history, not a treatise, and a gripping history at that.
So the best you can recall, Oswald didn't say that he had recently visited someone in the Cosa Nostra?
1963, "the Mafia in America," from Italian, literally "this thing of ours."