But if you like the newer comics, you're looking for Prime Earth, a delightfully mixed bag until the Rebirth initiative was in swing for about a year. Rebirth Flash is great, if you wanna read that.
Earth-R. Sadly, no writer has chosen to chronicle this in a comic, nor do we cover it on the wiki. There was Gotham City's Zero Year on Prime Earth, where you came close, though. Tell me, Riddler, how's Ed doing in there?