Adventure Comics #323

DC · August, 1964

1st appearance of Double Header; 1st Appearance of Double Header (LSH applicant); 1st appearance of Spider Girl; 1st Appearance of Spider Girl (LSH applicant); Legion; Phantom Girl demonstrates she can enter and leave the Phantom Zone at will; Reprint from Superboy (1st Series) #75 (Sep 1959); Saturn Girl re-elected Legion leader; Tales of the Legion of Super-Heroes; Time travel

The Eight Impossible Missions!; The Amazing Winner of the Great Proty Puzzle!; How Krypto Made History!; Origin of the Legion of Substitute Heroes (text)

Writers: Jerry Siegel, Otto Binder

Artists: John Forte, George Papp