Back before Crisis on Infinite Earths, there was a clear understanding of who had been a part of the "Golden Age" JSA.
But once Earth-2 / Earth-Two was gone, and the Justice Society of America turned out to be on the same Earth as the heroes of the Justice League of America, changes were made from time-to-time to what was thought to be the "history" of the JSA.
What I want to know from DC at some point is: Who was (or wasn't) a member of the 1940s Justice Society of America?
Questions about certain members include* Was there a "Wonder Woman" on the team in the 1940s? If so, was it the present-day Diana (which Wonder Woman #750 seemed to be making possible); was it Hippolyta (the John Byrne 1990s retcon); or was it somebody else? (I have a feeling that Roy Thomas' retcon putting Miss America in that role will probably be left out.)
* Was there a "Black Canary" on the team in the 1940s? If so, is she any relation to the present-day Dinah Laurel Lance? When did she join the team? (In the original stories, that didn't happen until 1947, well after the end of WWII.) And did she have any sonic "Canary Cry" powers then? (In comic book stories of the past she did not have any powers, but the more recent animated movie with Wonder Woman and the JSA included a Black Canary with sonic powers during WWII.)
* And one retcon I'm assuming DC is keeping is how active Wildcat was in the Justice Society during the 1940s. (In previously published adventures in All-Star Comics, Wildcat only appeared twice in the group's 55 issue run.)