Answer the following question, with explanation first.
The original Guardians of the Galaxy are a superhero team appearing in American comic books published by Marvel Comics. The Guardians first appear in Marvel Super-Heroes # 18 (Jan. 1969).\n\nAnswer this question based on the passage: when did guardians of the galaxy comic book come out?

Jan. 1969
The relevant information is: The Guardians first appear in Marvel Super-Heroes # 18 (Jan.

1969).

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The final answer: Jan. 1969