It's interesting, isn't it, when you get to see how a director works out the question of a blank reel of film?  That's what's happening here in this rough layout drawing for Chuck Jones's "Knight-Mare Hare" which rode into theaters on October 1, 1955 as Jones positions his characters for future movement.  

Besides Merlin wearing a beanie cap, I am tickled by the list of Bugs Bunny's royal friends in this cartoon:  Count of Basie, Duke of Ellington, the Earl of Hines, the Cab of Calloway, the Satchmo of Armstrong.  (It just makes me giggle.)