If y'all can't tell by now, I like Stephen Gammell's artwork. And this one, in my humble opinion, is one of his creepier illustrations. When I bought this, I joked with the cashier about these being classified as kids' books. You let the horror of this classification sink in.
It's from the third book, the story "Oh, Susannah!" And while it's all kinds of creepy by itself, it gets further points for not being at all related to the actual story.
For the full image, by the way, since motivationals crop:[link]
Illustration (C) Stephen Gammell