World's Finest Comics (1941, DC)

World's Finest Comics ran for 322 issues (1941–1986). Publishing format: was ongoing series. The series started as an anthology book with multiple features including Batman and Superman. As of issue 71, Superman and Batman started appearing in stories together. It becomes a Superman team-up book (like Brave & the Bold at the time for Batman) between issues #198 and 214. Superman teams up with someone other than Batman in #198-201, 203-205, 208-210, 212-214. #206 is all reprints. After two issues with the Super Sons, the Superman/Batman stories resume #217.