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/).
Inside front cover.
Recaps their first meeting from Superman (DC, 1939 series) #76.
Schnapp splash page title 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/). The splash page title reads "Your Two Favorite Heroes Superman [regular logo] and Batman and Robin [regular logo] in One Adventure Together!" Pat Gordon lettering per Nick Caputo.
Credits are from the corrections page in the Millennium Edition: Superboy #1 (2001 series).
Credits are from the corrections page in the Millennium Edition: Superboy #1 (2001 series).