First appearances of characters whose name contains “Earth-2 (named)”"

IssueTitleNotes
21Justice League of America1st Appearance of Earth-2 (named); Versus Crime Champions; Don Thompson L.O.C.; Justice League of America teams up with Justice Society of America; Return of Justice Society of America
21/AJustice League of America1st Appearance of Earth-2 (named); Versus Crime Champions; Don Thompson L.O.C.; Justice League of America teams up with Justice Society of America; Return of Justice Society of America