Avengers #316 - Spider-Man Joins The Avengers 1990

Avengers #316 sees Iron Man and Vision journey to the Moon, confronting Nebula aboard her starship. Joined by the rest of the Avengers and Spider-Man, they battle Nebula's alien forces. The team ultimately finds Nebula subdued by Starfox. This issue is highly notable to collectors as it features Spider-Man officially accepting membership into the Avengers, a significant moment in the team's history. It continues a multi-part storyline featuring the web-slinger.