I just stumbled across an interesting, if 2-year-old, interview with John Gall, art director at Vintage US (among other roles). In it, he discusses the 50th anniversary edition of Lolita which was published by Vintage US.
He reveals the original design, which both he and the publisher were eventually too nervous to run with. You can probably see why.
This reminds me of a Lolita cover with a different problem. The current Penguin Classics UK edition is fine on the front, but as Lucy Fishwife pointed out to me, on the spine the author is written 'Vladimir Nabkov'.
You'll have to believe me on that one: I didn't have a camera to hand when I came across it in the real world. It's a mite embarrassing, though.