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, the heroes 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.

Presents the tales of the Justice League througout multiple worlds.

A thrilling new collection featuring the next round of JLA/JSA team-ups, with a stunning cover by Alex Ross! This volume reprints JUSTICE LEAGUE OF AMERICA #91-92, 100-102, 107-108, and 113; featuring the legendary search through time for the Seven Soldiers of Victory, the discovery of Earth-X and the Freedom Fighters, and the final fate of Sandman's partner Sandy! Plus, an introduction by Len Wein.

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!

The Justice League of America teams up with their heroic predecesors, The Justice Society of America, in this new collection featuring three adventures that have never been reprinted before. First, the two teams face the unexpected theat from some of DC's war and Western characters, including Jonah Hex and Enemy Ace. Then, the teams must find the traitor within their own ranks. And finally, the JLA and JSA join forces with The New Gods to stop the evil might of Darkseid.

The Justice League of America teams up yet again with their heroic predecesors, The Justice Society of America, in this new collection featuring two adventures that have never been reprinted before. First, the two teams face the threat of the Ultra Humanite and the Secret Society of Super-Villains. Then, the JLA and JSA battle alongside the All-Star Squadron against the Crime Syndicate. This volume collects JUSTICE LEAGUE OF AMERICA #195-197, 207-209 and ALL-STAR SQUADRON #14-15.

Join the Justice League of America in some of their most action-packed adventures! Starting with the "Crisis on Earth" story, the Justice League of America meets the Justice Society of America! The teams have to team up if they want to defeat the Crime Champions and they'll even have to...switch Earths?! Will the teams solve the Crisis of Two Worlds? The JLA will team up with the JSA in more adventures and even face off against enemies, like the Crime Syndicate, on their own! Collects Justice League of America #21-22, Justice League of America #29-30, Justice League of America #37-38, Justice League of America #46-47, Justice League of America #55-56, Justice League of America #64-65, Justice League of America #73-74, Justice League of America #76, Justice League of America #82-83, and Limited Collectors' Edition #46

The incredible crossover events between the Justice League of America and the Justice Society of America that launched the DC Multiverse as we know it! This second of three volumes collects stories from Justice League of America #91-92, 100-102, 107-108, 113, 123-124, 135-137, 147-148, and 159-160.

The Justice League of America and their predecessors, the Justice Society of America, return for another collection of Bronze Age team-up stories that will set the stage for the greatest Crisis event to strike the DC Universe! This final softcover edition of the Crisis on Multiple Earths series collects Justice League of America #171-172, #183-185, #195-197, #207-209, #219-220, #231-232; All-Star Squadron #14-15; and DC Comics Presents Annual #1.

Two Earths! Parallel worlds, separated by both time and space, each unaware of the existence of the other. A generation of heroes arises on each planet. Although strikingly alike, they remain distinctly unique. The two worlds are forever linked when the scarlet speedster called the Flash pierces the dimensional veil and encounters his amazing counterpart - an older, wiser Flash. This incredible discovery changes the course of history! Contains: · Green Lantern (Volume 2) #40 · Showcase #55-#56 · The Brave and the Bold #61 · The Flash #123, #129, #137, #151 · Spectre #7