On-sale date from copyright registration.
Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
Information for this sequence from Arthur Lortie.
Science questions and answers, with one related illustration.
Four panels with scientific facts about space.
PSA celebrating United Nations Day, October 24th.
Sid Greene's usual depiction of Julius Schwartz as a character occurs in page 2 panel 2 (Charity Bazaar emcee).