Comic Title: Justice League of America #78
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: February 1970
On Sale Date: December 11, 1969 Newsstand Date December 11, 1969
Source: House Ad, Our Army at War #215, Page 25

Newsstand Date December 11, 1969
Source: Comic Reader, #75

Copyright Date December 11, 1969
Source: Library of Congress, Periodicals 1970

Frequency: Monthly, (with the exception of Jan., Apr., July, and Oct. (semi-monthly, Nov.)
Cover Price: $0.15
Page Count: 32
Editor: Julius Schwartz

Title: "The Coming of the Doomsters"
Pages: 23

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

Writer: Dennis J. O'Neil
Penciller: Dick Dillin
Inker: Joe Giella

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 Bronze Age Omnibus Vol. 1 HC (2017)
Justice League of America:The Last Survivors of Earth TPB (2019)

Feature Character(s)

• Justice League of America (last appearance in Teen Titans #25; next appearance in Justice League of America #79)
• Superman (last appearance in Superman's Pal Jimmy Olsen #126; next appearance in Justice League of America #79)
• Batman (last appearance in Batman #219; next appearance in Justice League of America #79)
• Green Lantern (last appearance in Teen Titans #25; next appearance in Justice League of America #79)
• Green Arrow (last appearance in Teen Titans #25; next appearance in Justice League of America #79)
• Atom (last appearance in Justice League of America #77; next appearance in Justice League of America #79)
• Hawkman (last appearance in Justice League of America #75; next appearance in Justice League of America #79)
• Black Canary (last appearance in Justice League of America #77; next appearance in Justice League of America #79)

Guest Star(s)

• Vigilante (first Earth-1 appearance; next appearance in Justice League of America #79)

Villain(s)

• The Doomsters (next appearance in Justice League of America #79)

Other Character(s)

• Jason B. Crass (a city manager; next appearance in Justice League of America #79)
• Attendees at a charity benefit (no further appearances)
• Two security guards (next appearance in Justice League of America #79)

Comments:
This story continues in Justice League of America #79.

This story features the first appearance of the JLA satellite headquarters.

Synopsis:
With the Secret Sanctuary's location exposed, the Justice League moves to a new headquarters aboard a satellite, orbiting 22,300 miles above the Earth. They reach their new base via a relativity-beam transporter created by Hawkman.

At the same time, a night watchman at an industrial plant discovers that the plant's sole product is pollution, and alerts the JLA. Robot gunmen attempt to kill him, and he is revealed as Greg Sanders, formerly the crimefighter known as the Vigilante. Resuming his costumed identity, Vigilante accompanies Batman, Atom, and Black Canary to investigate the mysterious factory, while Superman and Green Lantern, following another lead, find themselves on the planet Monsan, where all life has been destroyed by pollutants.

Defeated by their unknown foes, Vigilante and his companions face death as they are lowered into a vat of acid.