William Hanna worked in the entertainment industry.
Hanna-Barbera Productions , Inc. ( simply known as Hanna-Barbera and also referred to as H-B Enterprises , H-B Production Company and Hanna-Barbera Cartoons , Inc. ) was an American animation studio that dominated American television animation for over three decades in the mid 20th century . William Denby `` Bill '' Hanna ( July 14 , 1910 -- March 22 , 2001 ) 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 . In 1937 , while working at Metro-Goldwyn-Mayer ( MGM ) , Hanna met Joseph Barbera . In 1957 , they co-founded Hanna-Barbera , which became the most successful television animation studio in the business , producing programs such as The Flintstones , The Huckleberry Hound Show , The Jetsons , Scooby-Doo , The Smurfs , and Yogi Bear .