Discover a trove of holiday books inside this literary Advent calendar! Each flap opens to reveal an illustration from a book housed in the University of Oxford's famed Bodleian Libraries, so you can search for another festive book every day until Christmas (when you'll undoubtedly gift yourself even more books). Even better, this 8¼"x10" Advent calendar doubles as an oversized blank card so you can send it to a loved one with a long holiday letter inside. Envelope included, extra postage required.