http://www.thisintothat.com/secondeditions.html.
Link to website.
OK - is this cool or what! You really should look at the website and see all of the incredible stuff this guy makes with books. The photo came courtesy of his website.

From the website “This Into That offers functional art furniture, primarily book shelves on any theme. Each is made by Jim Rosenau at his studio in Berkeley, California. No books that could change the course of world events are harmed in the production.”