By Gene Mustain and Jerry Capeci, "authors of Murder Machine," and I agree with the cover copy that these are "the writers who know it best." The cover also notes that it's the "ONLY up-to-date book on the late Teflon Don," and while I can't speak to that, I can tell you the paperback is in fine shape; a bit of shelfwear to the corners and rear of spine, but that spine is uncracked and pin-straight.