Showcase Presents Challengers of the Unknown

Series Name: Showcase Presents Challengers of the Unknown
Publisher: DC
Publication Dates: 2006-2008

Showcase Presents Challengers of the Unknown Vol. 1 TPB 
Dated: 2006 
On Sale: October 18, 2006
Showcase Presents Challengers of the Unknown Vol. 1 TPB
Showcase Presents:Challengers of the Unknown Vol. 2 TPB 
Dated: 2008 
On Sale: April 30, 2008
Showcase Presents:Challengers of the Unknown Vol. 2 TPB

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