Superman #76

Superman faces one of his most iconic team-ups in this classic issue, as the Man of Steel joins forces with Batman and Robin for the very first time in comic book history. When circumstances bring Gotham's Dark Knight and Metropolis's champion together aboard a cruise ship, they must work side by side to solve a mystery while keeping their secret identities hidden from each other. This landmark 1952 story established the foundation for one of DC Comics' greatest friendships.