William Hanna worked in the entertainment industry.
Joseph Roland `` Joe '' Barbera ( [ bɑrˈbɛrə ] or [ ˈbɑrbərə ] ; [ barˈbɛːra ] ; March 24 , 1911 -- December 18 , 2006 ) was an American animator , director , producer , storyboard artist , and cartoon artist , whose film and television cartoon characters entertained millions of fans worldwide for much of the 20th century . Time Warner Inc. is an American multinational mass media and entertainment conglomerate headquartered in New York City . 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 . After working odd jobs in the first months of the Depression , Hanna joined the Harman and Ising animation studio in 1930 . 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 .