Rex Whistler did an astonishing book called Oho! in which the drawings of faces are still drawings of faces if turned upside down (drag the drawing onto the desktop and turn it and you will see). We have one copy of Oho! for sale in the shop for £20 – we bought it for the Rex Whistler Lunch but in fact no one bought it; now it will join our forthcoming Vintage Book Shelves in the shop, all books priced at £10 so this will be a bargain. (There is also a later volume called Aha! which was done as homage by Rex’s brother Laurence, although it doesn’t have quite the same magic; but it’s easily obtainable on Abe.)