Hanna Barbera

From Longman Dictionary of Contemporary EnglishHanna BarberaHan‧na Bar‧be‧ra /ˌhænə ˈbɑːbərə $ -ˈbɑːr-/    two cartoonists William Hanna (1910–2001) and Joe Barbera (1911–2006), who worked together for almost 50 years to make many popular cartoons, including Tom and Jerry, The Flintstones, and Yogi Bear.