The last Hanna-Barbera cartoon for Columbia Pictures before it was sold by Taft Broadcasting in 1966 when H-B began producing their original Saturday Morning cartoons. Meanwhile, many Hanna-Barbera shows are now owned by Warner Bros. Entertainment in 1991 and the launch of Cartoon Network in 1992.
The last H-B cartoon of the Columbia era.
The final series to have a 1961-1966 Hanna-Barbera logo before it was sold by Taft Broadcasting (later Great American) in September 1966, starting with Space Ghost (1966).
The first Hanna-Barbera cartoon series to be broadcast specifically on Saturday mornings. Later episodes such as The Magilla Gorilla Show (1964) and The Peter Potamus Show (1964) were moved to Saturday mornings on ABC instead of a prime-time nights following the acquisition of Great American Broadcasting in 1966.
The Atom Ant/Secret Squirrel Show was an animated series which featured the pint sized hero Atom Ant and super-sleuth Secret Squirrel.