First Superman-Batman team-up. It appears that this version of the story was used in the World's Finest Archives, as the note on the first page referring to the previous story in this issue is present there.
First Superman-Batman team-up in World's Finest Comics.
Original title: "The Dictator of Krypton City." Story re-lettered throughout to refer to city as Kandor. Relettering also adds references to Red Sun radiation and many other changes.
Sequel to "The Batmen of All Nations!" from Detective Comics (DC, 1937 series) #215, which is reprinted in the following issue.