I have few memories of this Batman cartoon growing up. one of them is with Batgirl in a cage. how odd is that? anyway, this was definitely a product of it's times, though not nearly as silly as the live action show. it holds up rather well. interesting to hear "Skull Island" in a cartoon.
later on both Hanna-Barbera and Filmation re-used some of these models and some of the actual shots (in the 70s Filmation series, anyway). these are the voices that were also used (sans Batgirl) in Superfriends for many years. you know who they are!