According to Julius Schwartz' pay records, Ross Andru & Mike Esposito were first paid for the cover to this issue, then Murphy Anderson was. It is likely that some of Andru & Esposito's work survives in the background characters with the main characters rendered by Anderson. However, there is also original artwork with the same background characters and Joe Kubert-drawn main characters in similar (but different) poses to the final cover. It is unclear if the Anderson and Kubert main characters are renditions of the original or in some way related directly. Most art-spotters also see Anderson in some elements of the background characters, so he may have re-worked some of Andru & Esposito's work.
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
Includes letters by future pro's Martin Pasko and Mark Evanier.