7th appearance of of the Legion of Super-Heroes and 1st appearances of the Legion of Super-Villains and the Adult Legion. Cover pencils by Curt Swan, inks by Sheldon Moldoff. The Great Mento!, art by Al Plastino; Perry White fakes ESP powers as The Great Mento (with Superman's help) to capture wanted criminals. Krypto Battles Titano!, art by Al Plastino; Krypto travels into the prehistoric past to meet Titano. The Legion of Super-Villains!, script by Jerry Siegel, pencils by Curt Swan, inks by Sheldon Moldoff; Luthor contacts and teams up with Legion of Super-Villains from 30th Century; adult Legion of Super-Heroes comes to 20th Century to help Superman. 36 Pages, Full Color. Cover price $0.10.