On-sale date from copyright registration.
Art credits by Bob Klein, Gene Reed, Bob Hughes, and Mike Tiefenbacher. Craig Delich and Pat Lang credit 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/).
Previously appeared in October 1952 issues.
Writer credit from Showcase Presents Green Arrow.