Jimmy Hoffa IBT would expand as the union itself grew. Hoffa worked to defend the Teamsters unions from raids by other unions, including the CIO, and extended the Teamsters' influence in the Midwestern states, from the late 1930s to the late 1940s. Although he never actually worked as a truck driver, he became president of Local 299 in December 1946. He then rose to lead the combined group of Detroit-area locals shortly afterwards, and advanced to become head of the Michigan Teamsters groups sometime later. During this time, Hoffa obtained a deferment from military service in World War II by successfully making
Jimmy Hoffa influence. In 1975, Hoffa was working on an autobiography titled "Hoffa: The Real Story", which was published a few months after his disappearance. He had earlier published a book titled "The Trials of Jimmy Hoffa" (1970). Hoffa disappeared on July 30, 1975, from the parking lot of Red Fox restaurant in Bloomfield Township, a suburb of Detroit. He had told others he was going there to meet with two Mafia leaders: Anthony Giacalone and Anthony Provenzano. Provenzano was also a Teamster leader in New Jersey and had earlier been close to Hoffa. Provenzano was a national vice-president with IBT from