She took one large book and cut out 40 little windows in which she placed miniature copies of Dickens' (and her own) favorite novels.
The artist explained that: “I made the book start to finish over five days, and it took about 35 hours to make I reckon. It was pretty painstaking cutting out all the gaps in the book itself, and making the books to go inside. They’re all bound like actual books, so as I waited for them to glue and dry I would design the covers for them. All the covers are copies of real book covers. They include many of Dickens’s novels, his favorite childhood books, and some of my own.”
via Shelf Awareness