Julius Schwartz's editorial records, provided by DC Comics, list Gil Kane as penciler and as inker. However art experts believe the inker is Murphy Anderson, a credit corroborated by Bob Bailey via e-mail on 5/16/2008.
Subsequent research reveals that Bob Rozakis credited Gil Kane as the sole artist of this cover in Green Lantern #100 (January 1978). The exclusive Kane credit was repeated in Showcase Presents Green Lantern vol. 2 (2007). Bob Bailey, on Aug. 21, 2011, gave an account of a conversation with Anderson, in which Anderson recalled working on this cover, but recalled that he was finishing or re-inking a cover inked first by Kane.
Gil Kane makes an appearance, breaking the fourth wall and informing the reader about the origin of Black Hand.
Tie-in to story in Green Lantern #24.
The Justice League only observes Green Lantern's actions from a distance and does not take an active role in the story.