Sammy Davis Jr., who provided the voice of the Cheshire Cat in this animated version of "Alice", would later appear as the Caterpillar in Alice in Wonderland (1985).
Henry Corden (Harry Corden), who provides Fred Flintstone's singing voice, would go on to replace Alan Reed as the voice of Fred Flintstone full-time.
Howard Morris and Harvey Korman later appeared in High Anxiety.
Allan Melvin and Howard Morris did voices for Beetle Bailey, Magilla Gorilla, and The Flintstones.
The first movie premiered for a syndicated broadcast channel. However, it was the first movie to be premiered on ABC.