||Aquaman, Batman, The Flash [Barry Allen]; Green Arrow [Oliver Queen]; Green Lantern [Hal Jordan]; Martian Manhunter; Superman; Wonder Woman; Snapper Carr; The Atom [Ray Palmer] (joins); Anton Kraft (flashback); Professor Amos Fortune (villain, as Mister Memory); Hector Hammond; Pied Piper; Sea Thief; Angle Man; Doctor Davis
||The Justice League unanimously elects The Atom for membership, but nobody knows who he is. The Power Ring tells them about The Atom, and they go to investigate in Ivy Town. Shortly, Atom gets amnesia, the work of Mister Memory and his de-memonitor, who has captured the entire Justice League, leaving Atom the only one who can save them.
||in Justice League of America (DC, 1960 series) #67 (November-December 1968); in Justice League of America Archives, The (DC, 1992 series) #2; in Showcase Presents: Justice League of America (DC, 2005 series) #1