Comic Title: Justice League of America #71
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: May 1969
On Sale Date: March 13, 1969 Newsstand Date March 13, 1969
Source: House Ad, Our Army at War #206, Page 31

Copyright Date March 13, 1969
Source: Library of Congress, Periodicals 1969

Newsstand Date March 13, 1969
Source: Comic Reader, #72

Frequency: Monthly, (with the exception of Jan., Apr., July, and Oct. (semi-monthly, Nov.)
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "...and So My World Ends"
Pages: 23

Feature(s):
Justice League of America (of Earth-1)

Writer: Dennis J. O'Neil
Penciller: Dick Dillin
Inker: Sid Greene

Reprinted In:
Justice League of America Archives Vol. 9 HC (2005)
Showcase Presents:Justice League of America Vol. 4 TPB (2009)
Justice League of America:The Silver Age Omnibus Vol. 2 HC (2016)

Feature Character(s)

• Justice League of America (last appearance in Justice League of America #70; next appearance in Justice League of America #72)
• Superman (last appearance in Superman's Pal Jimmy Olsen #119; next appearance in Superman #216)
• Batman (last appearance in Batman #211; next appearance in Detective Comics #387)
• Flash (last appearance in Flash #188; next appearance in Flash #189)
• Green Lantern (last appearance in Green Lantern #68; next appearance in Green Lantern #69)
• Martian Manhunter (last appearance in Action Comics #366; next appearance in Superman #253)
• Green Arrow (last appearance in Justice League of America #69; next appearance in Justice League of America #72)
• Atom (last appearance in Atom & Hawkman #42; next appearance in Atom & Hawkman #43)
• Hawkman (last appearance in Atom & Hawkman #42; next appearance in Atom & Hawkman #43)

Villain(s)

• Commander Blanx (leader of the Martian Pole-Dwellers; first appearance; dies in this story; last appearance in Justice League of America #144; no further appearances)
• The Martian Pole-Dwellers (no further appearances)
• Aliens from an unnamed planet of the star Antares (no further appearances)

Guest Appearance(s)

• Diana Prince (last appearance in Justice League of America #69; next appearance in Wonder Woman #183)
• I-Ching (last appearance in Wonder Woman #182; next appearance in Wonder Woman #183)

Other Character(s)

• A circus fire-eater (no further appearances)
• The Martian Desert-Dwellers (in flashback only; no further appearances)

Cameo Appearance(s)

• Dr. Mark Erdel (in flashback to J'onn J'onzz's origin)

Comments:
J'onn resigns from the JLA at the conclusion of this story.

Synopsis:
Diana Prince, formerly Wonder Woman, summons the Justice League to deal with a super-strong marauder, who turns out to be J'onn J'onzz in disguise. His mental faculties restored, the Martian Manhunter relates previously unrevealed details of his origin.

The leader of one of the opposing forces in a Martian conflict, he had been captured and exiled by the enemy commander, named Blanx. In his first year of exile, he had been teleported to Earth, where he began his super-hero and JLA careers. Now, his exile ended, he had returned to Mars, to find that Blanx was intent on exterminating all life on his native world. The Justice League resolves to accompany their old comrade in his vendetta against Blanx.

Green Arrow saves the team when a blast of red-sun energy renders them unconscious on the edge of space; Green Lantern and Superman attempt to prevent the destruction of Mars, while the others battle Blanx's men aboard his ship. His planet's surface burnt to a cinder by an uncontrollable blue flame, J'onn J'onzz confronts his arch-enemy, and they duel to the death. He then follows his people into space, in search of a new home.