Piles of Books is an ongoing series of works on black carbon paper based on the idea of books in stacks. I have used colophons of European books from 14th century until today. Here I inscribe overlapping layers of colophons on black carbon paper. I emphasize on the book as an object, focusing exclusively on information regarding its production, its typographical identity. The stacking of the books refers at the same time to the way in which knowledge, information, is ‘embedded’ in layers, but also to the history of European culture through its typographical production.