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Issue: Challengers of the Unknown #18
Publication Date: February 1961
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Disclose Detail
Issues: #18 of 87 Issues (90 Printings)
Title:
Variant: unnamed
Rating: Approved by the Comics Code Authority
Publisher: FlagDC
Brand: Superman DC National ComicsView Brand Images3
Indicia Publisher: National Comics Publications Inc.
On Sale Date: 12/13/1960
Volume: none
Pages: 36
ISBN: none
UPC/EAN: none
Price: $0.10 USD
Indicia Frequency: Approved by the Comics Code Authority
Content Items: 16 (5 stories, 1 cover)
Editor(s):  
Disclose Notes:  
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Disclose Format
Publication Type: Comic Book
Color: color
Dimensions: standard Silver Age U.S.
Paper Stock: glossy cover; newsprint interior
Binding: saddle-stitched
Publishing Format: was ongoing series
Format Notes:  
Disclose Reprinted In4
Disclose Reprinted From1
reprinted from a Content Item in another Issue.
Disclose Images1
Cover, Front
Original Artwork
Digital Edition
Adult Image
Title Page
Indicia on this Page
 
 
Assets2
Indicia
 
 
Statement of Ownership
 
 
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Disclose Content Items (16 total)
Disclose Issue Images
The Doomed World of Tomorrow!

Illustration  on  Cover, Front
Credits
Writer(s): ?
Colorist(s): ?
Subject Matter
Genres: adventure, superhero
Character(s): Dr. Oren Gough; a Cosmic Creature
Reprinting
In Content Item: FlagShowcase Presents Challengers of the Unknown #2 published June 2008
as [untitled] [Illustration on Cover, Front]
In Content Item: FlagShowcase Presents Challengers of the Unknown #2 published June 2008
as Challengers of the Unknown #18 [Cover Reprint (on Interior Page) on Interior Page(s)]
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose
[untitled]

Advertisement  on  Interior Page(s)
Credits
Writer(s): ?
Penciller(s): ?
Inker(s): ?
Letterer(s): typeset
Editor(s): ?
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose Notes: Inside front cover.
Disclose
The Menace of Mystery Island

Story  on  Interior Page(s)
Credits
Colorist(s): ?
Subject Matter
Genres: adventure, superhero
Character(s): Cosmo (introduction); crooks
Synopsis: On a Caribbean island June has inherited, the Challengers rescue an alien creature and name it Cosmo. An active volcano on the island splits the team. When Prof and Red are almost killed, they find that the volcano is man-made and are trapped by a steel cage. Meanwhile, Ace, Rocky, and June are snared in a steel net. Cosmo chews through the steel and projects eye-beams that disintegrate foliage as they hunt for Prof and Red, who had been captured by thugs. Cosmo's paws project force-beams to disarm the thugs -- who had been using the island as a weapons depot -- so the Challs can subdue them.
Reprinting
In Content Item: FlagShowcase Presents Challengers of the Unknown #2 published June 2008
as The Menace of Mystery Island [Story on Interior Page(s)]
Reprint Notes:  
Miscellaneous
Pages: 12.67
Disclose
Your Passport to Amazing Adventures!

Promotional Material (from Publisher)  on  Interior Page(s)
Credits
Writer(s): ?
Colorist(s): ?
Letterer(s): ?
Subject Matter
Genres: science fiction
Feature(s): House of Secrets; My Greatest Adventure; House of Mystery
Synopsis: House ad for current issues of House of Secrets, My Greatest Adventure, and House of Mystery.
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 0.33
Disclose
[untitled]

Story  on  Interior Page(s)
Credits
Colorist(s): ?
Subject Matter
Genres: humorous
First Line: Professor Eureka, I think I saw a creature from another planet through my window!
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose
Just Imagine!

Promotional Material (from Publisher)  on  Interior Page(s)
Credits
Writer(s): ?
Colorist(s): ?
Letterer(s): ?
Subject Matter
Genres: superhero
Feature(s): Justice League of America
Character(s): Kanjar Ro
Synopsis: House ad for Justice League of America #3.
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose
Flight without End

Text Story  on  Interior Page(s)
Credits
Writer(s): ?
Letterer(s): typeset
Subject Matter
Genres: adventure
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose
The Doomed World of Tomorrow

Story  on  Interior Page(s)
Credits
Colorist(s): ?
Subject Matter
Genres: adventure
Character(s): Dr. Oren Gough; Lenroy; three comrades; four Cosmic Creatures
Synopsis: The Challengers are transported by Dr. Oren Gough to the future where the Cosmic Creatures are attacking. Gough explains that the people of Earth will be evacuated, then a volti-ray used to wipe out the creatures. The Challengers volunteer to give their lives by manning the ray, but a man named Lenroy and his friends are also given the privilege. That night, the Challs discover that Lenroy -- who has secretly made the ray harmless to humans -- actually plans to use this opportunity to take over Earth. The Challs fire the volti-rays to destroy the creatures, subdue Lenroy, and return home.
Reprinting
In Content Item: FlagShowcase Presents Challengers of the Unknown #2 published June 2008
as The Doomed World of Tomorrow [Story on Interior Page(s)]
Reprint Notes:  
Miscellaneous
Pages: 12
Disclose
Our American Heritage

Public Service Announcement  on  Interior Page(s)
Credits
Colorist(s): ?
Subject Matter
Genres: informational, non-fiction, opinion
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose
[untitled]

Story  on  Interior Page(s)
Credits
Colorist(s): ?
Subject Matter
Genres: humorous, science fiction
Feature(s): Robbie the Robot
First Line: C'mon, Robbie, I see two seats!
Reprinting
From Content Item: FlagStrange Adventures #9 published June 1951
was [untitled] [Story on Interior Page(s)]
Reprint Notes:  
Miscellaneous
Pages: 0.67
Disclose
[untitled]

Statement of Ownership  on  Interior Page(s)
Credits
Writer(s): ?
Letterer(s): typeset
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 0.33
Disclose
[untitled]

Advertisement  on  Interior Page(s)
Credits
Writer(s): ?
Penciller(s): ?
Inker(s): ?
Colorist(s): ?
Letterer(s): typeset
Editor(s): ?
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 0.5
Disclose
[untitled]

Advertisement  on  Interior Page(s)
Credits
Writer(s): ?
Penciller(s): ?
Inker(s): ?
Colorist(s): ?
Letterer(s): typeset
Editor(s): ?
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 0.5
Disclose
[untitled]

Advertisement  on  Interior Page(s)
Credits
Writer(s): ?
Penciller(s): ?
Inker(s): ?
Colorist(s): ?
Letterer(s): ?
Editor(s): ?
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose
You Asked for It!

Promotional Material (from Publisher)  on  Interior Page(s)
Credits
Writer(s): ?
Penciller(s): ?
Inker(s): ?
Letterer(s): ?
Subject Matter
Feature(s): Showcase; Aquaman
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose Notes: Inside back cover.
Disclose
[untitled]

Advertisement  on  Interior Page(s)
Credits
Writer(s): ?
Penciller(s): ?
Inker(s): ?
Colorist(s): ?
Letterer(s): typeset
Editor(s): ?
Reprinting
Reprint Notes:  
Miscellaneous
Pages: 1
Disclose Notes: From Wilson Chemical Co.
Back cover.

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