On-sale date from copyright registration.
Art credits per Bob Hughes. Bob Klein, Gene Reed, Mike Tiefenbacher and Nick Caputo credit pencils to Dick Dillin and inks to Sheldon Moldoff. Craig Delich and Pat Lang previously credited art to 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/).
inker credit by Bob Hughes
On the page immediately preceding page 9 of the previous story sequence.
Writer credit from Showcase Presents Green Arrow.