Showcase #20 (DC, 1959 — Cover A)
DC Comics · Showcase (1956-1978) · 27 pages · Published 1959-05-06
- Jack Miller — Writer
- Jack Schiff — Writer
- Henry Boltinoff — Writer
- Ruben Moreira — Penciller
- Ruben Moreira — Inker
- Bernard Baily — Penciller
- Bernard Baily — Inker
- Henry Boltinoff — Penciller
- Henry Boltinoff — Inker
- Russ Heath — Penciller
- Russ Heath — Inker
- Bob Brown — Cover Artist
"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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