From my library to yours: The Magic Mirror of M.C. Escher

I'm a big fan of M.C. Escher's work and I've been looking for a book that not just shows his work and talk about his life. Instead I wanted a book that described his process of work, his life and show his work and it's process sketches and I found it on this book:

The Magic Mirror of M.C. Escher by Bruno Ernst published by Taschen. Like any book on artist it talks about the life of Escher, his influences and the work he did. Unlike any book on artist it mentions how his work developed, the process of his works (his original sketches are shared), his explorations and why he created these illustrations. Is really cool to read how he reached its final illustration. Now here is a peek: