Some PBS Kids Bookworm Bunch shows are from Hanna-Barbera Productions because PBS Kids Bookworm Buch shows are TV series based on Children's books and classic Hanna-Barbera Cartoons. Founded in 1940.
Nelvana Limited (a Chorous Entertainment) (pre 1967)
Warner Brothers (post 1966)
PBS Kids Bookworm Buch (pre 1967)
Cartoon Network and Boomerang (post 1966)
Treehouse TV (Canada) (pre 1967)
Cartoon Network and Boomerang (Canada) (post 1966)