Sources: 5 Most Powerful Mafia Bosses grapact 22nd September 2020 https://www.biography.com/news/famous-mob-mafia-bosses https://www.britannica.com/biography/Al-Capone https://www.forbes.com/pictures/mjd45ehjhh/al-capone-gangster/#39322853626f https://www.biography.com/crime-figure/al-capone https://www.history.com/topics/crime/saint-valentines-day-massacre https://www.biography.com/crime-figure/bugsy-siegel Benjamin “Bugsy” Siegel https://www.history.com/this-day-in-history/bugsy-siegel-opens-flamingo-hotel https://www.britannica.com/biography/Lucky-Luciano https://en.wikipedia.org/wiki/Five_Families https://www.history.com/this-day-in-history/mafia-boss-john-gotti-is-born Vito Genovese