The perfect companion piece to the CRISIS ON INFINITE EARTHS and HISTORY OF THE DC UNIVERSE trade paperbacks, this book features the classic tales of interaction between the heroes of Earth-One and Earth-Two. Existing in two different realities, theheroes of the Justice League team up with their predecessors the Justice Society of America in order to save both their worlds. Featuring different incarnations of Batman, Superman, the Flash and many other classic heroes. Collects JUSTICE LEAGUE OF AMERICA #21-22, #29-30, #37-38, and #46-47.

Four more summer meetings between the legendary Justice League of America and Justice Society of America are collected in this highly demanded volume! Collecting JUSTICE LEAGUE OF AMERICA #55-56, #64-65, #72-73, #83-84 plus an introduction by Martin Pasko and a new coverpainting by Jerry Ordway!

The seed for Crisis on Infinite Earths was planted in the universe-altering Silver Age tales contained within this volume. The talents of editor Julius Schwartz, writer Gardner Fox, and penciller Mike Sekowsky crossed over worlds to team up the Justice League of America (Earth-One) with their Golden Age predecessors -- the Justice Society of America (Earth-Two)! The two teams combine forces to defeat world-shattering threats to their Earths! Join DC's greatest heroes in timeless adventures that changed the DC Universe for all time! Book jacket.

Featuring the first appearance of the Justice League of America! When Starro the Conqueror arrives on Earth intent on enslaving humanity, it's up to the superheroes of the world to band together and defeat the evil alien! Also featuring the first appearance of Lucas 'Snapper' Carr.

The first appearance of Green Arrow and Aquaman! First, meet the costumed adventurer Green Arrow and his sidekick Speedy. Together, these expert archers use an array of trick arrows to defend the helpless! Then, the King of the Seven Seas, Aquaman, showcases his amazing powers!

When Earth's second Green Lantern, Guy Gardner, is injured, Hal's ring finds a new backup GL. But John Stewart seems like a strange hero: belligerent and cocky, he isn't above making some flashy moves while fighting crime. Plus: Green Arrow responds to a race riot by deciding to run for mayor of Coast City.

The origin and first appearance of one of DC's iconic super heroes takes place here. Jay Garrick, the original Flash, is introduced in a story by Gardner Fox and Harry Lampert! NOTE: Sorry, not all stories shown on the cover can be included.

The Justice Society of America raise money for war orphans in this book-length adventure, "$1,000,000 for War Orphans."

The first appearance of Poison Ivy in "Beware of Poison Ivy!" Poison Ivy challenges the reigning female villains in Gotham City. Batman and Robin are on the move to stop her, but they're both at risk of falling victim to her charms! Content scan quality may vary.

Clark Kent investigates a series of railroad accidents that turn out to be anything BUT accidental!