Comic Title: Justice League of America #72
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: June 1969
On Sale Date: April 24, 1969 Copyright Date April 24, 1969
Source: Library of Congress, Periodicals 1969

Newsstand Date April 24, 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: "13 Days to Doom"
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 #71; next appearance in Justice League of America #73)
• Superman (last appearance in Superman's Pal Jimmy Olsen #120; next appearance in World's Finest Comics #185)
• Batman (last appearance in Brave & the Bold #84; next appearance in World's Finest Comics #185)
• Flash (last appearance in Flash #189; next appearance in Flash #190)
• Green Lantern (last appearance in Green Lantern #69; next appearance in Green Lantern #70)
• Green Arrow (last appearance in Justice League of America #71; next appearance in Justice League of America #74)
• Atom (last appearance in Atom & Hawkman #43; next appearance in Atom & Hawkman #44)
• Hawkman (last appearance in Atom & Hawkman #43; next appearance in Atom & Hawkman #44)

Guest Star(s)

• Hawkgirl (last appearance in Atom & Hawkman #43; next appearance in Atom & Hawkman #44)
• Red Tornado (last appearance in Justice League of America #65; next appearance in Justice League of America #73)

Villain(s)

• Several demons (no further appearances)
• The Gruesome Ghouls (a motorcycle gang; Gummy named; no further appearances)

Other Character(s)

• Marmaduke Mantick (a parchment collector and amateur sorcerer; no further appearances)

Cameo Appearance(s)

• Martian Manhunter (as a statue)

Synopsis:
Red Tornado comes to Earth-1 to warn the JLA of a peril facing the Justice Society, but before they can hear him out, the super-heroes must deal with an unknown agency which has transformed Hawkman and several other citizens of Midway City into salt statues. Marmaduke Mantick, an amateur sorcerer, has inadvertently conjured up a host of demons by using the Philosopher's Stone, and these are responsible for the transformations.

The Justice League saves Mantick from attempted assault by a motorcycle gang, whose leader is one of the victims, and encounters the gang again when they kidnap Hawkgirl and attempt to exchange her for Mantick.

After waiting thirteen days for the Philosopher's Stone to become reactivated, the heroes are dismayed to learn that the would-be magician has misread his mystic parchments: the stone needs thirteen thousand years, not days, to recharge. Gallantly, the Justice League members wage a hopeless assault against the demon forces, but it is the non-human Red Tornado, immune to the salt-transformation spell, who repels the magical foes and reverses the doom that had befallen Hawkman and the others.