Showcase (1956-1978) #20 by Jack Miller, Jack Schiff, Henry Boltinoff, Ruben Moreira, Bernard Baily & Russ Heath

Showcase (1956-1978) #20

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�PRISONERS OF 100 MILLION B.C.� Featuring the origin and first appearance of Rip Hunter! Having finished work on Time Sphere II, Rip Hunter and Jeff Smith take a trip back to the Mesozoic era!

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