Superman Goes to Hell

Excerpt from The Art of Neil Gaiman by Hayley Campbell, page 70-71. 

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At that same convention [The British Fantasy Convention, 1985] Gaiman met Diana Wynne Jones, who was guest of honor at what was the first convention she had ever attended. Neil kept her company while she stood nervously at the bar, and downstairs Moore was reading Jones's The Ogre Downstairs to his daughters, Amber and Leah, as their bedtime book. With the kids safely asleep he'd come back out and talk about comics. "I remember the stuff that he was telling me about that hadn't come put yet. He was telling me about the last Superman story ("Whatever Happened to the Man of Tomorrow?"), which hadn't yet come out. And he was telling me about a thing he did that never came out, which was Bernie Wrightson and him collaborating on "Superman Goes to Hell" and Lex Luthor going to rescue him.