Jimmy Hoffa vanished 50 years ago. The unsolved mystery and his legend endure

In this file photo from August 1958 American labor leader Jimmy Hoffa, President of the Teamster

Labor leader Jimmy Hoffa vanished 50 years ago. What happened remains a mystery as Hoffa's legend has grown. There have been books and hit movies but still no answers.

(Image credit: Keystone/Getty Images)