**The perfect companion piece to Crisis on Infinite Earths features
classic team-ups between the heroes of Earth-One and Earth-Two, the
Justice League, and the Justice Society of America.
**
This book features the classic crossovers between the Justice League and
their predecessors the Justice Society of America that launched the DC
Multiverse as we know it! This collection brings features adventures of
the heroes of two Earths as they search through time for the Seven
Soldiers of Victory, discover of Earth-X and the Freedom Fighters, meet
the heroes of Earth-S, led by the Earth's Mightiest Mortal, Captain
Marvel, as well as the Legion of Super-Heroes!
Includes Justice League of America #91-92, #100-102, #107-108,
#113-124, #135-137, #147-148, and #159-160