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 Hanna . Hanna-Barbera 's shows had a worldwide audience of over 300 million people in their 1960s heyday , and have been translated into more than 28 languages .