Who were the first members of the justice league of america?

The founding members if the JLA are Superman, Batman, Wonder Woman, the Flash, Aquaman, the GL, and Martian Manhunter.
Others like Green ऐरो and Black Canary joined later on.
Remarkably, all of the founding members of the past remained the founding members in the New 52 (at least there's SOMETHING it didn't fu** up)

The original JLA consisted of 7 members - Superman, Batman, Flash, Green Lantern, Aquaman, Wonder Woman and Martian Manhunter. Honarary member स्नैपर Carr was also featured in many early issues.

The team added Green ऐरो (issue 4), Atom (14) and Hawkman (31) - before losing Wonder Woman in issue 69 and then Martian Manhunter in issue 71. Metamorpho turned down the offer of JLA membership in issue 42.

Black Canary joined what became known as the satellite era League in issue 75 before स्नैपर Carr was tricked द्वारा the Joker into revealing where the JLA's secret HQ was in issue 77 - leading to Snapper's resignation.
Other हीरोस to शामिल होइए the team were;
Phantom Stranger # 103
Elongated Man # 105
Red Tornado # 106
Hawkgirl #135
Zatanna # 161
Black Lightning # 173
Firestorm # 179