The imaginary library
No, you are not looking at real books. As astonishing as this may seem, these are aquarelle paintings, done by the German artist Hannes Möller. His “Imaginary Libraries” project features dozens of these nearly-real-looking bookshelves and bookbindings. The top image is so real - with its repaired cut, from which the thread was removed - that it fooled me when I came across it. Check out some on this website and read more about him in this news item (both in German).