Collecting JUSTICE LEAGUE OF AMERICA #122-124, #135-137 and #147-148! In this latest collection of team-ups, meet the heroes of Earth-S, led by the Earth's Mightiest Mortal, Captain Marvel, as well as the Legion of Super-Heroes!

Earth-One? Earth-Two? Infinite Earths? Where did it all start? The path for the universe-altering Crisis began in the fondly remembered Silver Age tales contained within the CRISIS ON MULTIPLE EARTHS—a new 208-page trade paperback collecting the highly requested early JLA/JSA team-ups! This volume is a perfect companion piece to the CRISIS ON