On 28 September, 1966, actor Eric Fleming died in a boating accident whilst filming live-action location shots for this series, in the Huallaga river, located in Peru.
The final episode of this series was a re-edited version of Tarzan, the Ape Man (1959) starring Denny Miller. Ironically, at the same time this aired on ABC, an episode of the series Tarzan (1966), starring Ron Ely was being broadcast on NBC.
The first animated television series produced by MGM after ending the theatrical shorts from 1963 to 1967.
The first and only animated television series produced by MGM Animation/Visual Arts.