Action Comics #256

Superman - "The Superman of the Future!"What would Superman look like if he lived in the year of 100,000 A.D.? By a twist of fate, the world finds out one day and sees the remarkable way evolution has changed the Man of Steel, when he becomes... "The Superman of the Future!"Congorilla - "Janu, the Joker of the Jungle!"Until now, only adult minds have inhabited the body of the amazing man-ape known as Congorilla! But what would happen if, suddenly, a boy's mind took over the body of the huge gorilla? Moreover, what if that young mind were full of mischief? The result is funnier than a cage full of monkeys, as Congo Bill's young pal becomes... "Janu, the Joker of the Jungle!"Supergirl - The Great Supergirl Mirage!In Metropolis, Lois Lane is the one who tries to expose Clark Kent as Superman!...