Adventures of Superman — DC Comics
Issue: #617
Mr. Mxyzpltk splits himself into Dale and Dolores, the Mxy Twins, who want to sell the "Encyclopedia Universal" to people, whether they want to buy it or not. What happens when they try to sell Superman a copy and he refuses?
Creators: Lee Bermejo, Charlie Adlard, Eddie Berganza, Comicraft, Jeromy Cox, Joe Casey, Tom Palmer Jr, Richard Horie, Tanya Horie
Characters: Superman, Lois Lane, Mr. Mxyzptlk, Jimmy Olsen, Lex Luthor, Cosmic Boy, Perry White, Saturn Girl, Alice White, Prince Charles, Osama Bin Laden