Here are two more model sheets from the same stack that the Paul Murry sheet came from.
Incomplete fourth grade copies, but still interesting as they shows the "Latest models of Mickey" and are dated October 18, 1938. He has been re-designed several times since, but this design has always kept coming back. Timeless and classic. Click images to enlarge.
Has these been published anywhere? (Got too many books on Disney animation to check, but I cant remember seeing these before.)
Got two more sheets dated 10-18-38, featuring action sketches and heads.