On-sale date from copyright registration.
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/).
Possible Mooney pencils per Nick Caputo. Klein/Reed credit Sprang only. Craig Delich credited Curt Swan on splash page art but Nick Caputo sees no sign of his input.
Green Arrow returns to green hat.