Comic Title: DC Comics Presents #27
Publisher: DC (DC Comics Inc.)
Address: 75 Rockefeller Plaza, New York, NY
Cover Date: November 1980
On Sale Date: August 14, 1980 Newsstand Date August 14, 1980
Source: DC Coming Attractions, #45

Newsstand Date August 14, 1980
Source: Comics Journal, #57
Misnumbered #28

Copyright Date August 14, 1980
Source: Library of Congress, Copyright Office 1980

Newsstand Date August 12, 1980
Source: Comic Reader, #182

Newsstand Date August 11, 1980
Source: Daily Planet, Vol. 80 #23
Listed as on sale the week of August 11th

Shipping Date July 22, 1980
Source: DC Coming Attractions, #45

Frequency: Monthly
Cover Price: $0.50
Page Count: 32
Editor: Julius Schwartz

Title: "The Key That Unlocked Chaos"
Pages: 17

Feature(s):
Superman (of Earth-1)
Martian Manhunter (of Earth-1)

Writer: Len Wein
Penciller: Jim Starlin
Inker: Dick Giordano
Letterer: Todd Klein
Colorist: Jerry Serpe

Reprinted In:
Showcase Presents:DC Comics Presents:The Superman Team-Ups Vol. 2 TPB (2013)
Superman Vs. Mongul TPB (2014)
DC Universe by Len Wein HC (2019)

Feature Character(s)

• Superman (last appearance in Super Friends #37; next appearance in DC Comics Presents #28)
• Martian Manhunter (last appearance in Justice League of America #178; next appearance in Justice League of America #200)

Supporting Character(s)

• Lois Lane (last appearance in Superman #352; next appearance in Superman #353)
• Jimmy Olsen (last appearance in Detective Comics #495; next appearance in Superman #353)
• Steve Lombard (last appearance in Action Comics #512; next appearance in Superman Family #205)

Villain(s)

• Mongul (first appearance; next appearance in DC Comics Presents #28)