This card #1 - titled Gus is the only representation from Cinderella in the entire set. How is there no Cinderella character card? The animated movie debuted in 1950. If there's a flaw with this set, it's because Gus is the #1 card and there's no Cinderella card. That decision is very perplexing to me.
Here's the info from the back of the card. And the stories told in so few words on the back of each individual character card is why I believe that this set has significance in the world of Disney cards.
Card #1 - Gus
"Gus is one of the two little mice that befriend Cinderella in her loneliness in the wicked Stepmother's House. Lucifer the cat is always chasing Gus but in spite of this Gus still stays the tubbiest of mice."