Crisis on Multiple Earths Book 2: Crisis Crossed

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
 Comics, TV and movie writer Len Wein began his career in comics 40 years ago. He has been editor-in-chief of Marvel Comics, Disney Comics and Top Cow, as well as a senior editor at DC Comics. He is the co-creator of comic book series Swamp Thing, Human Target, Brother Voodoo, Wolverine and X-Men.