World’s Finest Comics was published initially by National Periodical Publications and later by DC Comics beginning in the Summer of 1941 until January of 1986 spanning a total of 322 issues. The series was intially entitled World’s Best Comics, but changed to World’s Finest after issue #1.
Originally, World’s Finest was an anthology series that featured DC’s most popular characters from other anthology series — mainly Superman and Batman. The comic was 1.5 times larger than standard comics, and cost 15¢ (when standard comics were 10¢).
With World’s Finest #71, the comic was made regular-size (and price). In order to retain the draw of Superman and Batman without giving them both full-length stories, the series began chronicling the team-up adventures of Batman and Superman. Unlike their Post-Crisis counterparts, the early versions of these characters were the greatest of friends and routinely teamed up to battle the likes of villains such as Lex Luthor, Brainiac and the Joker. Although not considered an official part of the World’s Finest team, the Golden Age Robin assisted them in many of their adventures.
For the best part of the Silver and Bronze Ages, the series continued publication with different formats going from regular size comics, featuring experimental ideas such as the Super-Sons storyline and the Superman team-ups; to 80-pages dollar comics, which featured various back-up stories including Wonder Woman, Shazam, Green Arrow among other notable characters, but always with a main focus on Batman and Superman. The series was eventually cancelled in 1986 after a series of failed attempts to revitalize the concept of the primary characters and the growing tensions between them as their new characterization made it impossible to keep the stories feasible.