This piece was done by an anonymous artist. Here is a description of the work that was posted on an article in the Huffington Post:

Over the course of eight months, from March to November of 2011, ten small book sculptures bearing tags “In support of libraries, books, words, and ideas” were smuggled into various cultural venues around Edinburgh. Although the artist has remained anonymous, the beauty of both the work and the mystery surrounding it has gained renown. The project is interwoven with new technology, with each gift addressed to the venue’s Twitter name. The only books used that were written by a living author were Exit Music and Hide and Seek, both by Edinburgh’s Ian Rankin. In what seemed only a fair exchange, sculpture 11/10, @beathhigh, was the single work not gifted to an institution but to Ian.

Not only is the piece beautiful and so intricately carved, it is just plain cool. The story and meaning behind it makes it that much better.