||Justice League of America [Atom [Ray Palmer] (flashback); Batman [Bruce Wayne] (flashback); Black Canary [Dinah Drake Lance] (joins); Green Arrow [Oliver Queen]; Green Lantern [Hal Jordan] (flashback); Hawkman [Katar Hol; Carter Hall] (flashback); Superman [Clark Kent; Kal-El] (flashback)]; Green Lantern [Alan Scott] (Earth-2; flashback); Dr. Oyal; John DeLeon
||Black Canary joins the JLA after traveling to Earth 1 from Earth 2. The JLA must battle evil versions of themselves, and Black Canary discovers she's gained the power of a sonic scream as a result of crossing over to Earth-1.
||Black Canary leaves Earth 2, joins the League (details explained in Justice League of America (DC, 1960 series) #219, #220). Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).
||in Best of DC, The (DC, 1979 series) #31; in Justice League of America Archives, The (DC, 1992 series) #9 (November 2004); in Green Arrow / Black Canary: For Better or For Worse (DC, 2007 series) #nn