Title: Challengers of the Unknown Archives Vol. 1 HC
Publication Date: 2003 (On Sale: July 2, 2003)
Format: 168-Page Hardcover w/Dustjacket
Cover Price: $39.95
Collection Group: Archives
Notes: 2 known printings
Contents: Showcase #6,7,11,12 and Challengers of the Unknown #1-2

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)