Volume 1 - 1st printing. "Crossing Over!" Collects Justice League of America (1960-1987 1st Series) #21-22, 29-30, 37-38, 46-47, 55-56, 64-65, 73-74, 76, and 82-83.

Written by Gardner Fox and Dennis O'Neil. Art by Mike Sekowsky, Dick Dillin, Bernard Sachs, Joe Giella, and Sid Greene. Cover by Dave Gibbons. Back Cover by Jerry Ordway.

From legendary comics writers Gardner Fox and Dennis ONeil come 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 collection brings together the earliest adventures of the heroes of two Earths as they battle their own arch-foes, the doppelgänger villains of Earth-Three known as the Crime Society, and more!

Softcover, 416 pages, full color.