From the publisher:

Return to the 30th century--a time when the universe is under the protection of the greatest group of teenage heroes in history. In these tales from the late 1960s, Superboy and his Legionnaire friends must face Mordru, the Dominators, the Fatal Five, and more.

With stories written primarily by Jim Shooter (at the time only a teenager himself) and art by Win Mortimer, Curt Swan, and others, this collection contains such milestones as the Legion's origin story and the introduction of Shadow Lass!

This final omnibus volume finishes out the Legion's Silver Age, collecting stories from Adventure Comics #361-380; Superman's Pal Jimmy Olsen #106; Superboy #147; and Action Comics #378-387, #389-392.

In these 1960s stories the Legion of Super-Heroes meets the team of villains who never lose! Plus, witness "The Revolt of The Super-Pets"! Discover "Chameleon Boy's Secret Identity"! And unravel the mystery of "The Legionnaires Who Never Were"

Written by Jim Shooter, E. Nelson Bridwell, and Cary Bates . Art by Jim Mooney, Pete Costanza, Curt Swan, George Klein, George Papp, Sheldon Moldoff, Jack Abel, Win Mortimer, Mike Esposito, and Murphy Anderson.