Over four days, between October 12–16, 1957, the American gangster Joseph Bonanno allegedly attended a series of meetings between some high-level Sicilian and American mafiosi in the Grand Hotel des Palmes (Albergo delle Palme) in Palermo, Sicily – the most splendid in town at the time. The so-called 1957 Palermo Mafia summit has become a legendary landmark in the international illegal heroin trade in popular Mafia non-fiction. The question is if it ever took place. The details of it are still shrouded in mystery. According to some, one of the main topics on the agenda was the organisation of the heroin trade on an international basis. The FBI believed it was this meeting that established the Bonanno crime family in the heroin trade.
The protagonist of this "heroin summit" legend is journalist Claire Sterling: "Although there is no firsthand evidence of what went on at the four-day summit itself, what followed over the next thirty years has made the substance clear. Authorities on both sides of the Atlantic are persuaded by now that the American delegation asked the Sicilians to take over the import and distribution of heroin in the United States, and the Sicilians agreed." However, she fails to back this claim with solid evidence. Sterling even has the dates of the alleged meeting wrong.
At the time, although the Sicilian Mafia was involved to some extent in the heroin business all through the 1950s and 1960s, it never had anything more than a secondary role in the world drugs system. According to the McClellan Hearings, Sicily was no more than a staging-post in the shipment of French-produced heroin to the USA. Until the 1970s, Sicilian mafiosi were prevented from acquiring any oligopoly on the heroin market because they were not competitive in comparison with other European criminal groups, in particular the French Connection by Corsican groups in Marseille.
The first mention of the "summit" in the United States was during the McClellan Hearings on October 10–16, 1963. Among the American mafiosi present were Joe Bonanno, his underbosses and advisors Carmine Galante, John Bonventre and Frank Garofalo, as well as Lucky Luciano, Santo Sorge, John Di Bella, Vito Vitale and Gaspare Magaddino. While among the Sicilian side there were Salvatore "Little Bird" Greco and his cousin Salvatore Greco, also known as "l'ingegnere" or "Totò il lungo", Giuseppe Genco Russo, Angelo La Barbera, Gaetano Badalamenti, Calcedonio Di Pisa, Cesare Manzella and Tommaso Buscetta.