Trivia: Which of these inter-company mashups was released first?

Sep 19

Wonder Woman/Conan #1 has us thinking crossovers. Which of these intercompany mashups was released first?

Take a guess!

The Uncanny X-Men and the New Teen Titans #1

Superman vs. the Amazing Spider-Man

Batman vs. the Incredible Hulk (DC Special Series #27)

Superman and Spiderman (Marvel Treasury Edition #28)

Justice League of America vs. the Avengers

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