H. G. Wells. The World Set Free: A Story of Mankind. London: Macmillan and Co., 1914. The novel that unleashed atomic warfare upon the world. I actually already have a copy but it's a modern edition, and I'd prefer to reference an original edition, where possible. Besides which, the University of Nebraska Press inexplicably changed the title of their edition from The World Set Free to The Last War, which abomination I don't want stinking up my bibliography!