Found a picture that sort of captures the idea of the book and light. I would take this one and rotate it with the long edge facing me, and make the light come out of all the edges.:
http://www.sxc.hu/photo/1204250 And these pictures show the angle and locks, as well as some embossing although the books are a little too thick:
http://cliparto.com/image/3184962-old-book-/http://cliparto.com/image/3184830-old-book-/