I have mentioned the work of the husband-wife duo John and Faith Hubley on the blog a couple of times before, from their bread and butter (animation) to vintage jazz magazine covers by John.
I recently came in possession of an anti-war children's book of theirs, The Hat, which was first an animated short from '63. The book is dedicated to jazz musicians Dizzy Gillespie and Dudley Moore, who also happen to play the two soldier protagonists of the story (and who actually voiced the characters in the film). I had not been aware that a couple of the Hubley shorts had been translated to children's books by the couple them-self, this one and 73's Dig! A Journey under the Earth's Crust.
What is so interesting about the books is that they seem to capture the same artistic value of the animated shorts in print form, because they apply a similar animation aesthetic rather than following the typical picture book design standard. For example, some of the pages are formatted as if it were a film storyboard ... a bunch of thumbnail squares across the page with text underneath, rather than those being expanded for a full page illustration or spread. The same artistic techniques are also used on the book, such as the unique crayon/watercolor silhouettes of the characters.
Here are a few scans of some of my favorite pages ...