Avengers #12 CGC 6.0 Fan letter from George R.R. Martin, Game of Thrones, at 16 years old (cert 6013)

THIS HOSTAGE EARTH! Giant-Man believes something dangerous is happening beneath the earth, but none of the other Avengers believe him, so he heads underground himself to investigate. Shortly after, he is captured by Mole Man. More damage occurs and the Avengers discover Giant-Man was correct, so they invade Mole Man's underground base.  Meanwhile, the Red Ghost approaches the Mole Man and they make an alliance. The Wasp frees Giant-Man, and the team stops the Mole Man and Red Ghost's plans.