On-sale date from ad in Batman #160 and copyright registration.
Pencils credit per Bob Klein, Gene Reed, Mike Tiefenbacher, and Bob Hughes. Craig Delich and Pat Lang credit pencils 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/).
time travel story
On the page immediately preceding page 9 of the previous story sequence.
Writer credit by Martin O'Hearn. Compare to story in World's Finest Comics #100.