Bob Klein, Gene Reed, Mike Tiefenbacher, and Bob Hughes credits pencils to Dick Dillin. Craig Delich and Pat Lang credits pencils to Jim Mooney (February 2005).
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/).
time travel story
in between parts 1 and 2 of first story.
compare to story in WF 100. Writer id by Martin O'Hearn