I remember when this show was on in prime time (1972 or so). It was mildly entertaining for the time, but with all the animated series that have come since I'm not so sure it has aged well. It might be interesting as a reflection of social/political topics (and stereotypes) of that period, but I really don't remember it being that good. I am interested in some of the other 70s TV shows, not so much this one.
I thought I'd seen at least an episode or two of almost every obscure H-B cartoon series in existence, but I'd never even heard of this one before.
Like everyone else, I was glued to the tv as a kid, and I must admit, I've never heard of it either.