Marvel Super Heroes was an anthology comic that pretty much sucked all around. And by #21 it was all reprints anyway. But there was this quiet little issue that introduced The Guardians of the Galaxy. No, not the movie stars. The original team. The one introduced at the end of GotG2.
The story doesn’t make much sense and it ends paraphrasing a Civil Rights anthem.
Still, you can’t deny its importance. Elevates it from a D+ to a C.