Jimmy Hoffa Agreement. He played a major role in the growth and development of the union, which eventually became the largest (by membership) in the United States with over 2.3 million members at its peak, during his terms as its leader. Hoffa became involved with organized crime from the early years of his Teamsters work, and this connection continued until his disappearance in 1975. He was convicted of jury tampering, attempted bribery and fraud in 1964, in two separate trials. He was imprisoned in 1967 and sentenced to 13 years. In mid-1971, he resigned as president of the union as part of
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