Board Thread:General Discussion/@comment-1312012-20161212132314/@comment-1312012-20161227095612

I've discovered that Who's Who: The Definitive Directory of the DC Universe reveals the exact Earth-2/Earth-1 transition point for Batman, Catwoman, Green Arrow, Luthor, Mxyzptlk, Dick Grayson and Speedy.

The DC Heroes roleplaying game has it's own Who's Who supplements that had lists of every Earth-2 and Earth-1 appearance for Jimmy Olsen (E1 only), Perry White, Etta Candy, Steve Trevor, the Batmobile, the Fortress of Solitude, Aquaman, Doctor Psycho, Hugo Strange, the Joker, Luthor, Mxyzptlk, the Prankster, Two-Face, Hippolyta, Lois Lane, Vicki Vale, the Batcave and Arkham Asylum.