Challengers of the Unknown
DC Comics.
Challengers of the Unknown Archives 1 (1-2, Showcase 6-7, 11-12;
w Jack Kirby, Dave Wood; a Jack Kirby, George Klein, Roz Kirby, Bruno Premiani,
Marvin Stein). [From DC Comics: Four years before
Jack Kirby and Stan Lee created Marvel's Fantastic Four, there was another
adventurous foursome co-created by Kirby that set forth to challenge the
unknown. It was a concept way ahead of its time. The Challengers were Ace
Morgan (crackerjack test pilot), Red Ryan (daredevil and mountain climber),
Rocky Davis (heavyweight boxing champ) and Prof Haley (scientist specializing
in underwater exploration) - four men who barely survived the crash of a
small aircraft and now considered themselves to be living on borrowed time!
Because they managed to avoid such a devastating fate, they dedicated themselves
to a life of harrowing adventure, all in the name of good! Nothing was deemed
too dangerous for the Challengers - after all, they should have been dead
already. Debuting in the tryout comic Showcase, they quickly graduated to
their own monthly comic, where the foursome faced the impossible and the
unimaginable at every turn. In this first of a two-volume set, we present
to you the first six comics featuring the Challengers: Showcase #6, 7, 11,
and 12, and Challengers of the Unknown #1 and 2.] 
Challengers of the Unknown Archives 2 (3-8; w Jack Kirby, Ed Herron,
Dave Wood; a Jack Kirby, Wally Wood, Marvin Stein). [From
DC Comics: A second thrilling Archive Edition featuring the adventures
of the Challengers of the Unknown, with art by Jack Kirby & Wally Wood!
This volume collects Challengers of the Unknown #3-8, circa 1958-1959, and
is offered at a special low price. This volume is highlighted by a host
of '50s science-fiction oddities, including a mysterious "star stone"
that bestows super-powers, a space circus, monsters from space, a planet
populated by robots, and more! Plus, an introduction by John Morrow, editor/publisher
of The Kirby Collector.] 
Showcase Presents: Challengers of the Unknown 1 (1-18, Showcase 6-7, 11-12; w Jack Kirby, Dave Wood, Ed Herron; a Jack Kirby, Bob Brown, Wally Wood). [From DC Comics: Relive the classic Silver Age adventures of Jack Kirby's Challengers of the Unknown - a team brought together by fate dedicated to a life of harrowing adventure in the name of good!] 
Showcase Presents: Challengers of the Unknown 2 (18-37; w Ed Herron et al.; a Bob Brown). [From DC Comics: Along the way, the intrepid foursome faces dangers of every imaginable sort, including cosmic-powered alien beasts, doomed worlds, futuristic knights and much more.] 4/23/08 
Challengers of the Unknown Must Die (8-issue mini; w Jeph Loeb; a Tim Sale). [From DC Comics: The 8-issue miniseries that was Loeb & Sale’s first DC collaboration is collected in a thrilling trade paperback! As a bonus, this collection includes a never-before-printed 12-page tale from the same period, plus the original series covers by Brian Bolland, Kyle Baker, Matt Wagner, Mark Hempel, Gil Kane, Michael Golden and Sale, an intro by Loeb and a new cover by Sale!] 
Challengers
of the Unknown: Stolen Moments, Borrowed Time (6-issue mini; w & a Howard Chaykin).
[From DC Comics: In a world devoid of super-heroes, five extraordinary people who survived a cataclysmic event will discover that the world we live in is not the one we believe it to be.] 