Animation Model Sheet 550-8006 - Peed's Dodo Suggestions
Well I'll be damned...a newly discovered model sheet. How cool is that? And this one is extra special, it mentions a specific artist by name!
That's right, this model sheet is specifically by Bill Peed (later Bill Peet) who was a story artist on Alice and did a lot of storyboard work on this and many other features before leaving the company in the late 1960s to pursue his solo career in children's books and illustration. Boy that was a long sentence.