Cover: Jack Kirby
Showcase Presents Challengers of the Unknown #1
“The Secret of the Sorcerer's Box! [Chapter 1]”
writer, artist, inker Jack Kirby · writer Dave Wood · inker Roz Kirby · letterer Ben Oda · cover Jack Kirby
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Full credits
writer, artist, inker Jack Kirby
writer Dave Wood
inker Roz Kirby
letterer Ben Oda
cover pencils Jack Kirby