Contents • • • • • • • • • • 1940–1958: Hanna-Barbera/MGM Cartoons [ ] The following 114 shorts were directed by and at the in. All shorts were released to theaters. Was the producer of Puss Gets the Boot; subsequent shorts were produced by through 1955. Quimby retired in 1955 and from 1956 to 1958, Hanna and Barbera produced the shorts until MGM closed the cartoon studio in 1957, and the last cartoon was released in 1958. Most of these cartoons were produced in the standard (1.37:1). Four cartoons were produced for both Academy Ratio and CinemaScope formats (2.55:1, later 2.35:1). Finally, 19 cartoons were produced in widescreen format only.