Original: However, in various issues (particularly issue 12) of the current Justice League series, the founding members of the Justice League are shown to be: Superman, Batman, Wonder Woman, Green Lantern (Hal Jordan), Flash (Barry Allen), Aquaman, and the Martian Manhunter.
Simplified: The first members were Superman, Batman, Wonder Woman, Flash, Green Lantern, Aquaman, and the Martian Manhunter.