Timeline (1951 to 1966)

The timeline for The Toon Boom is broken into several sections.
 * Timeline (The Toon Boom to 1941)
 * Timeline (1942 to 1950)
 * Timeline (1951 to 1966)
 * Timeline (1967 to 1989)
 * Timeline (1990 to 2001)
 * Timeline (2002 to Today)

1955

 * July 6 - Mad airs for the first time. It is based on the magazine of the same name and it is the longest running animated series and one of the first.