Challengers of the Unknown by Jack Kirby

    (DC, 2012)
™ and © 2012 DC Comics, Inc.

(from the publisher)

Now in one amazing volume collecting SHOWCASE 6, 7, 11 and 12 and CHALLENGERS OF THE UNKNOWN #1-8, these are the original 1950s tales of four death defying adventurers and their incredible exploits.
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