The Untold Story of the Phantom Zone! comes in two parts:
The Crimes of Krypton's Master Villains
The Kid Who Knocked Out Superboy!
(Both parts written by Edmond Hamilton)
Gives the history of the Phantom Zone criminals, from Jor-El inventing a device to send criminals there to the present day, where the criminals want to get their revenge through Superboy!
Varsity Vic (gag strip by Henry Boltinoff)