Superman (1939-) #240
Under the Scarlet Jungle of Krypton lies a condemned device, with which scientist Mal-Va planned to send his assistant, Zol-Mar, into the past and then return him after ten minutes.
Written By:
Dennis O'Neil, Cary Bates
Pencils:
Curt Swan, Michael Kaluta
Inks:
Dick Giordano, Michael Kaluta
Cover By:
Neal Adams