Bob Klein, Gene Reed, and Mike Tiefenbacher credit pencils and inks to Dick Dillin and Sheldon Moldoff. Craig Delich and Pat Lang credit art to Jim Mooney. Bob Hughes credits pencils and inks to Dick Dillin and Jim Mooney.
Letters credit from Todd Klein via his Klein Letters blog (18 September 2016, http://kleinletters.com/Blog/ira-schnapp-in-worlds-finest-comics-part-1/).
parallel world story. inker credit by Bob Hughes 2/05
in between parts 1 and 2 of first story.
Writer credit from Showcase Presents Green Arrow.