DC · October, 1963
1st Appearance of Planet Lexor; Versus Lex Luthor; Versus Ras-Krom
The Showdown Between Luthor and Superman!; Cartoon: Casey the Cop; The Super-Duel!; The Fugitive From the Phantom Zone!
Writers: Edmond Hamilton, Henry Boltinoff
Artists: Curt Swan, Henry Boltinoff