Happy birthday weekend to author R. L. Stine, whose Goosebumps series remains the stuff of our Halloween-loving dreams. His book covers equally scared, amused, and thrilled us as young readers — and not much has changed. Stine’s spooky formula is a hard combination to beat, but there are other creepy book covers that deserve mention when it comes to the scariest designs in the world of books. Here are just a few. Feel free to share your personal favorites on Twitter and Facebook.