Brian Dettmer is THE preeminent book sculptor and you can see why here.
From his site:
"Explanation of Process
In this work I begin with an existing book and seal its edges, creating an enclosed vessel full of unearthed potential. I cut into the surface of the book and dissect through it from the front. I work with knives, tweezers and surgical tools to carve one page at a time, exposing each layer while cutting around ideas and images of interest. Nothing inside the books is relocated or implanted, only removed. Images and ideas are revealed to expose alternate histories and memories. My work is a collaboration with the existing material and its past creators and the completed pieces expose new relationships of the book’s internal elements exactly where they have been since their original conception."
Go check out his website, there are so many more pictures to look at from 2005 to 2011. These works amaze me and I'm sure they will amaze you, too.