William Hanna was employed by at least one company.
Tom and Jerry is an American animated series of short films created in 1940 , by William Hanna and Joseph Barbera . In its original run , Hanna and Barbera produced 114 Tom and Jerry shorts for Metro-Goldwyn-Mayer from 1940 to 1958 . William Hanna . After working odd jobs in the first months of the Depression , Hanna joined the Harman and Ising animation studio in 1930 . The two men began a collaboration that was at first best known for producing Tom and Jerry and live action/animated hybrid films . In 1967 , Hanna-Barbera was sold to Taft Broadcasting for $ 12 million , but Hanna and Barbera remained heads of the company until 1991 .