Credits by Craig Delich, verified by Burnley.
Inside front cover.
Pencils and inks credits from Craig Delich. Letters credit from Todd Klein via his Klein Letters blog (19 September 2016, http://kleinletters.com/Blog/ira-schnapp-in-worlds-finest-comics-part-2/).
Intro of the Impossible But True radio program, later to feature Roy Raymond.
Letters credit from Todd Klein via his Klein Letters blog (19 September 2016, http://kleinletters.com/Blog/ira-schnapp-in-worlds-finest-comics-part-2/).
Inker credit by Craig Delich.
Letters credit from Todd Klein via his Klein Letters blog (19 September 2016, http://kleinletters.com/Blog/ira-schnapp-in-worlds-finest-comics-part-2/).
Story title confirmed from table of contents. Letterer credit by Craig Delich.
Art identification by Craig Delich. Letters credit from Todd Klein via his Klein Letters blog (19 September 2016, http://kleinletters.com/Blog/ira-schnapp-in-worlds-finest-comics-part-2/). Letter balloons are not by Schnapp, but probably by the artists.
Letters credit from Todd Klein via his Klein Letters blog (19 September 2016, http://kleinletters.com/Blog/ira-schnapp-in-worlds-finest-comics-part-2/).