This is a cute little animation that I scanned from the great book "The Merchant of Dennis", an autobiography of Dennis creator Hank Ketcham.
Ketcham worked in animation at Disney in the 40's but left to work on his own stuff and good thing he did it too.
Dennis is one of my favorite published cartoons and I study them constantly. They have great staging and great designs and is a great reference for storyboard artists.
This little piece of animation is uncredited in the book and I wished I knew who did it. It is beautiful.