His full name is James Riddle Hoffa. But everyone knew him as Jimmy. A labor leader who thrived in the rough and tumble world of union organizing, of contracts, and picket lines ... and of standing up ...

In this photo from August 1958, American labor leader Jimmy Hoffa, president of the Teamsters union, testifies at a hearing investigating labor rackets. Hoffa disappeared in 1975, and no body has ever ...