"Into the Microcosmos, Part Two: The Siren Sisterhood"
*Now in the microcosmos, the Justice League starts their search for the Atom. As the League approaches a walled city, the members begin to forget who they are and why they are there. (This story runs from issue #213 to #216.)
Aquaman, Firestorm, Flash, Green Lantern, Superman, Wonder Woman and Zatanna appear in a one-panel flashback. *Source: DocRx8482 (edited by Tamwood)