A couple years ago, as the writer Sarah Elizabeth was working on her book, "The Art of Fantasy" (out September 12th), a particular illustration kept popping into her mind's eye. It was the cover for the 1976 Dell/Laurel Leaf paperback edition of Madeleine L'Engle's classic sci-fi/fantasy novel "A Wrinkle in Time."

She wanted to include the piece in her book, but she didn't know who the artist was. "I thought, 'Oh, pish posh! Surely I'm going to find this in the first page of Google.' No. No, no, no!"

The answer isn't on any page of google, or any page of the physical book itself — not the copyright page where the rest of the credit information is, not the front or back cover, NOWHERE.