Here are some places that may have produced the show you are looking for. Try Googleing and see what you can find.
Crawley Films, Krantz animation, Guest Group. Nelvana, Atkinson Film Arts,Hinton Animation Studios, Filmation, Ruby-Spears productions.
Those are all the ones I can think of that aren't as well known as Warner Brothers, Disney or Hanna-Barbara (now owned by WB)