I recently found this low res photo online of Ollie Johnston as he is animating a scene with Johnny Appleseed. Behind him, pinned on a board are a couple of sheets showing sketches of Ichabod Crane and Brom Bones. Ollie would work on those characters next, as would his colleague Frank Thomas.
But it was Ward Kimball who drew these early development sketches. Incidentally I posted scans of the originals way back in 2012.
Here is the link to the earlier Ichabod post:
https://andreasdeja.blogspot.com/2012/11/ichabod.html