Mason Mahay, the actor who performs the voice of Oliver, was 8 at the time this episode was recorded. The voices of all the "kid" characters are performed by young actors - while the animals are all voiced by adults.
Mouse's comic book drawings in episode 102 were inspired by the original drawings by Felicia Bond in the "If You Give a Mouse" books.
Superman is often thought to be the first comic book superhero - but Time magazine cites an earlier hero by the same authors:"Doctor Occult, the Ghost Detective."
Mouse first appears as a Hero in episode 102's "Masked Mouse" but he also appears in cape and mask again in episodes 113 and 124.
In the series, we rarely see any of the parents, although they are often 'within ear shot' of the action. Oliver's Mom, as in episode 102, is the exception and she appears in several episodes.