Justice League of America (1960-) #37

The annual JLA/JSA crossover kicks off when the Johnny Thunder of Earth-1 takes control of the Earth-2 counterpart's Thunderbolt. Using the power of the Thunderbolt, Johnny goes back in time to prevent the JLA from ever existing!

Written By:
Gardner Fox
Mike Sekowsky
Bernard Sachs
Cover By:
Mike Sekowsky, Murphy Anderson, Joe Letterese