Hanna-Barbera

Hanna-Barbera was an American animation studio and production company that was active from 1957 until it was absorbed into Warner Bros. Animation in 2001. It was founded on July 7, 1957, by William Hanna and Joseph Barbera following the decision of Metro-Goldwyn-Mayer (MGM) to close its in-house cartoon studio, and was formerly headquartered on Cahuenga Boulevard from 1960 until 1998 and at the Sherman Oaks Galleria in Sherman Oaks, both in Los Angeles, California.