These photocopies of Milt Kahl's character designs for the mice leads in The Rescuers are currently offered byHeritage Auctions. Milt is exploring various outfits, but he is mainly trying to come up with new design concepts for animated mice. Not an easy task.
Bernard's nose eventually shrank to a more conventional, smaller size.
I do like the sketch in the the upper right corner, even though this looks like a British character.
Here is the link to my previous post on designing Bernard & Bianca:
https://andreasdeja.blogspot.com/2013/05/bernard-bianca.html