I recently came across these two design sheets my Milt Kahl. The one above is the "Darling" character from Lady & the Tramp, voiced by the one and only Peggy Lee. I saw one of her last performances at the Hollywood Bowl years ago, she was incredible. I'll never forget that night. This sheet explores Darling's hair style, how to get a hold of it graphically. Still, those perfect Milt Kahl faces always get to me. Animator Ken O'Brien ended up animating Darling as well as her husband Jim Dear.
More on O'Brien's work for Lady & the Tramp here:
The next sheet is a xerox stat of cow studies from 101 Dalmatians. Horns...no horns, that is the issue here. In the film some cows have them, some don't. A terrific "modern" cow design approach, which also made it into the farm sequence from Mary Poppins.
The cow design sheet is currently being offered at Heritage Auctions.