The most powerful characters in two universes collide as DC's premier super-heroes meet Marvel's. Collected in a gorgeous two-volume oversized slipcased hardcover is perhaps the most eagerly anticipated and memorable crossover of all time, as the Justice League of America unites with The Avengers. Superman, Batman, and the other members of the JLA join forces with Captain America, Iron Man, and the many other Avengers to fight a threat so immense it threatens two entire dimensions. The second hardcover in this deluxe set features art and articles chronicling this historic crossover--which has been over twenty years in the making.