(4th Chronological Appearance of the Legion of Super-Heroes.)
"The Army of Living Kryptonite Men" - - *Lex Luthor, who has created a helmet that allows him to animate stone, lures Superboy to a remote asteroid and attacks him with "living" Kryptonite men. However, the Legion of Super-Heroes, which has been monitoring the battle from the future, sends Lightning Lad to rescue the Boy of Steel and help him defeat the teenage scientist. *Source: The Official Legion of Super-Heroes Index #1 - Published by ICG.
Also features back-up stories: "The Super-Coward" and "The Boy Who Betrayed Clark Kent". First appearance of Pete Ross.