When I first started making my own DC universe I didn't realize just how much DC has erased and ignored the time between the JSA disbanding and the JLA forming, like they really try to sell that the league is the starting point for the "modern age" when in reality there's barely even a gap between the time superheroes stopped operating and the new guys coming in.
For starters I don't think you can put the JLA forming any later than 1990-1991 because these people are OLD so this gives you an 40 year gap to play with considering that the JSA disbanded in 1951.
Here's a list of teams that have operated during that time:
• freedom brigade
• inferior five (depending on if you consider the freedom brigade being formed in the 40s or the 60s)
• justice experience
• infinity inc (there's NO WAY those fuckers are peers with the teen titans)
• squadron of justice
Even when the JSA and the All-star squadron disbanded most of them still operated as usual.
While I'm at it I would also like to note that there were other heroes before 1938, the old west vigilantes are pretty cool and there have been heroes here and there through the centuries.
