Cover Date: July 1960 Writers: Gardner Fox Art: Mike Sekowsky Featured Characters: Justice League of America [JLA: Green Lantern [Hal Jordan]; Martian Manhunter [J'onn J'onzz]; Flash [Barry Allen]; Wonder Woman [Diana Prince]; Aquaman [Arthur Curry]; Superman [Clark Kent]; Batman [Bruce Wayne]; Snapper Carr]
- First appearance of Amazo, an android that can replicate the powers of superhumans
- First appearance of Professor Ivo, creator of Amazo
- Third appearance of the Justice League of America
