Find signed books by Margaret Atwood, David Nicholls and more
As part of the Guardian and Observer book swap, books signed by famous authors have been left in public places – follow the clues and see if you can find one
The Book Swap launched this weekend, with readers setting their books free at swimming pools, greengrocers and phone boxes. Take a look at some of the books dropped off already, and join our Flickr group to let us know what you'll be releasing into the wild
