Per Jay Willson "The artwork is by Kane, Giordano and Mike DeCarlo, from layouts and “concept designs” from Ross Andru". Mike DeCarlo has confirmed the Kane, Giordano and DeCarlo credits.
Previous indexer credited Ross Andru (pencils) and Gil Kane (inks) per Lou Mougin.
Credits and indicia, on the inside front cover.
DC's first graphic novel, Star Raiders, is a spin-off from this story.