Frank Costello (Jan. 26, 1891, - Feb. 18, 1973)

Calabrian Costello entered the U.S. at age 4. He was raised in New York City and became well acquainted with the Italian communities in East Harlem and New York's Lower East Side. A trusted adviser of the Luciano organization following the Castellammarese War, Costello became boss of the organization in the 1930s after Luciano was imprisoned and underboss Vito Genovese fled to Italy to escape prosecution for murder. Costello oversaw Mafia investments in casinos and gambling devices. In 1957, Costello survived an assassination attempt by a Genovese gunman and decided to retire. He died of natural causes in 1973.

John Bazzano (May 22, 1890, - Aug. 6, 1932)

A native Calabrian, Bazzano rose to command the Mafia in Pittsburgh. He seized the leadership after having boss Giuseppe Siragusa murdered several days after Siragusa's protector, Salvatore Maranzano, was murdered in New York City. Bazzano dealt in similar fashion with Neapolitan rivals, the Volpe brothers. Bazzano had three of the brothers shot to death at his Rome Coffee Shop in Pittsburgh. Called before a council of Mafiosi in New York City, Bazzano provided no justification for his action against the Volpes. His body, bearing multiple stab wounds from ice picks, was found within a large sack in Brooklyn.