Claim: William Hanna died before working at MGM.
Evidence: In 1937 , while working at Metro-Goldwyn-Mayer -LRB- MGM -RRB- , Hanna met Joseph Barbera.
William Denby `` Bill '' Hanna -LRB- July 14 , 1910 -- March 22 , 2001 -RRB- was an American animator , director , producer , voice actor , and cartoon artist , whose film and television cartoon characters entertained millions of people for much of the 20th century.