in Superboy (DC, 1949 series) #202 (June 1974)
in The Legion of Super-Heroes Archives (DC, 1991 series) #8 (1998)The cover was fully penciled by Curt Swan; Carmine Infantino altered and partially re-laid it out afterwards; the new figures of Supergirl and Brainiac 5 and corrections were tightened up and the entire cover inked by Neal Adams (per Neal Adams via email, March 2007).
in The Legion of Super-Heroes Archives (DC, 1991 series) #8 (1998), #8 (1998)Continues from previous issue.