Quote Originally Posted by CaptCleghorn View Post
The JSA, and pretty much all of DC's Golden Age characters were pegged to WW2. Exceptions were the characters that continued on through the fifties and made it into the Silver Age (Super Friends, Green Arrow, and their supporting casts). The question isn't when did the JSA get pegged, but when did the others become unpegged?
If I had to pick one point, its the "debut" of Earth-2 Wonder Woman in Flash #137. That opens the door.