Carlo Gambino learned that his underboss Joseph Biondo had been hiding money from the family and demoted Biondo and replaced him with former Albert Anastasia loyalist Aniello Dellacroce who had operated a street crew out of the Ravenite Social Club at 247 Mulberry Street in Little Italy.
January 13 - Vincenzo Rao, in exchange for protection from federal prosecution, agrees to testify against the Lucchese crime family's criminal operations.
January 15 - According to federal authorities, it is reported with the absence of Joseph Bonanno the Bonanno crime family has begun to splinter into two factions led by Salvatore Bonanno and Gaspar DiGregorio which is expecting to lead to a civil war within the New York crime family.
March 18 - New York mobster Vincenzo Rao is indicted for perjury by a federal grand jury.
April 24 - Owney Madden, one of the last surviving Prohibition gangsters, dies of natural causes at a hospital in Hot Springs, Arkansas.
June 1 - Chicago Outfit boss Sam Giancana was incarcerated for contempt after refusing to testify under an offer of immunity before a Federal grand jury probing organized crime in the Chicago area. Released on May 31, 1966, he subsequently fled to Latin America, where he stayed until expelled by Mexican authorities on July 19, 1974.
November 23 - Hours after escaping from federal authorities, in which had had pulled a revolver, Murray "The Camel" Humphreys is found dead of an apparent heart attack.