For some reason the first time I wrote this comment I typed in the wrong name even though it was right before me.
What I MEANT to say was, it's been years since I saw Emil Gershwin's artwork and I didn't remember him being this good. "Leave it to Your Fairy Godmother" is nicely-drawn, with good attention to backgrounds and detail plus some charming elves (and a nice fairy). Cute story, too.
Now someone will probably tell me this isn't really Emil Gershwin.
Link to the book:
Adventures Into The Unknown 112