Comic Title: Superboy & the Legion of Super-Heroes #231
Publisher: DC (DC Comics Inc.)
Address: 75 Rockefeller Plaza, New York, NY
Cover Date: September 1977
On Sale Date: June 21, 1977 Newsstand Date June 21, 1977
Source: House Ad, Karate Kid #10, Page 28

Newsstand Date June 21, 1977
Source: DC Coming Attractions, Vol. 2 No. 7

Copyright Date June 21, 1977
Source: Library of Congress, Periodicals 1977

Newsstand Date June 21, 1977
Source: Comic Reader, #144

Newsstand Date June 20, 1977
Source: Daily Planet, Vol. 77 #24
Listed as on sale the week of June 20th

Shipping Date May 31, 1977
Source: DC Coming Attractions, Vol. 2 No. 7
Listed as shipping the week of May 31st

Frequency: Monthly
Cover Price: $0.60
Page Count: 48
Editor: Dennis J. O'Neil

See Also: The Guide to DC Giants

Title: "A Day in the Death of a World"
Pages: 34

Feature(s):
Legion of Super-Heroes (of Earth-1)

Writer: Paul Levitz
Penciller: James T. Sherman
Inker: Jack Abel
Colorist: Liz Berube

Reprinted In:
Legion of Super-Heroes Archives Vol. 13 HC (2012)

Feature Character(s)

• Legion of Super-Heroes (last appearance in Karate Kid #10; next appearance in Justice League of America #147)
• Brainiac 5 (last appearance in Superboy #230; next appearance in Justice League of America #147)
• Colossal Boy (last appearance in Superboy #229; next appearance in Superboy & the Legion of Super-Heroes #232)
• Element Lad (last appearance in Superboy #230; next appearance in Superboy & the Legion of Super-Heroes #236)
• Karate Kid (last appearance in Karate Kid #10; next appearance in Karate Kid #11)
• Mon-El (last appearance in Superboy #229; next appearance in Superboy & the Legion of Super-Heroes #232)
• Princess Projectra (last appearance in Karate Kid #10; next appearance in Justice League of America #147)
• Saturn Girl (last appearance in Superboy #230; next appearance in Justice League of America #147)
• Shadow Lass (last appearance in Superboy #229; next appearance in Justice League of America #147)
• Sun Boy (last appearance in Superboy #230; next appearance in Justice League of America #147)
• Superboy (last appearance in Adventure Comics #453; next appearance in Superboy & the Legion of Super-Heroes #232)
• Ultra Boy (last appearance in DC Special #28; next appearance in Justice League of America #147)

Villain(s)

• Fatal Five (last appearance in Superboy #219; next appearance in Superboy & the Legion of Super-Heroes #246)
• Emerald Empress (last appearance in Superboy #219; next appearance in Superboy & the Legion of Super-Heroes #246)
• Mano (last appearance in Superboy #219; next appearance in Superboy & the Legion of Super-Heroes #246)
• Persuader (last appearance in Superboy #219; next appearance in Superboy & the Legion of Super-Heroes #246)
• Tharok (last appearance in Superboy #219; next appearance in Superboy & the Legion of Super-Heroes #246)
• Validus (last appearance in Superboy #219; next appearance in Superboy & the Legion of Super-Heroes #246)