Ah dear, bookshopping in my lunch hour is a dangerous business.
Not only do I have Europe's largest academic Waterstones a mere stagger from my office door, but there is a closing down art bookshop round the corner, from where I just had to get the following (they also had moleskine books on sale, but I resisted!)
It has a whole history of tile making, from medieval floor tiles, to modern designs. Here are just a couple of them:
Art-deco shop tiles - perfect for printing or stencil designs?