Title: Challengers of the Unknown Omnibus HC
Publication Date: 2012 (On Sale: June 20, 2012)
Format: 320-Page Hardcover w/Dustjacket
Cover Price: $39.99
Collection Group: DC Universe
Contents: Showcase #6,7,11,12 and Challengers of the Unknown #1-8

Stories:

• Challengers of the Unknown: "The Secrets of the Sorcerer's Box" (24 pages)
  Dave Wood (Writer) Jack Kirby (Artist)
  Reprinted From: Showcase #6 (1957)

• Challengers of the Unknown: "Ultivac Is Loose" (24 pages)
  Jack Kirby (Writer/Artist)
  Reprinted From: Showcase #7 (1957)

• Challengers of the Unknown: "The Day the Earth Blew Up" (24 pages)
  Jack Kirby (Writer/Artist)
  Reprinted From: Showcase #11 (1957)

• Challengers of the Unknown: "The Menace of the Ancient Vials" (24 pages)
  Jack Kirby (Writer/Artist) Wallace Wood (Inker)
  Reprinted From: Showcase #12 (1958)

• Challengers of the Unknown: "The Man Who Tampered with Infinity" (14 pages)
  Jack Kirby (Writer/Penciller) Marvin Stein (Inker)
  Reprinted From: Challengers of the Unknown #1 (1958)

• Challengers of the Unknown: "The Human Pets" (10 pages)
  Jack Kirby (Writer/Penciller) Marvin Stein (Inker)
  Reprinted From: Challengers of the Unknown #1 (1958)

• Challengers of the Unknown: "The Monster Maker" (14 pages)
  Jack Kirby (Writer/Artist)
  Reprinted From: Challengers of the Unknown #2 (1958)

• Challengers of the Unknown: "The Traitorous Challenger" (10 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #2 (1958)

• Challengers of the Unknown: "The Secret of the Sorcerer's Mirror" (12 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #3 (1958)

• Challengers of the Unknown: "The Menace of the Invincible Challenger" (12 pages)
  Jack Kirby (Writer/Artist)
  Reprinted From: Challengers of the Unknown #3 (1958)

• Challengers of the Unknown: "The Wizard of Time" (25 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #4 (1958)

• Challengers of the Unknown: "The Riddle of the Star-Stone" (25 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #5 (1958)

• Challengers of the Unknown: "Captives of the Space Circus" (15 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #6 (1959)

• Challengers of the Unknown: "The Sorceress of Forbidden Valley" (10 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #6 (1959)

• Challengers of the Unknown: "The Beasts from Planet 9" (13 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #7 (1959)

• Challengers of the Unknown: "The Isle of No Return" (12 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #7 (1959)

• Challengers of the Unknown: "The Man Who Stole the Future" (12 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #8 (1959)

• Challengers of the Unknown: "The Prisoners of Robot Planet" (13 pages)
  Jack Kirby (Writer/Penciller) Wallace Wood (Inker)
  Reprinted From: Challengers of the Unknown #8 (1959)