What year did wolvering show up in xmen?

Wolverine first appeared in "The Incredible Hulk" #180 in 1974, created by Roy Thomas, Len Wein, and John Romita Sr. He made his official debut in the following issue, #181. Wolverine was later introduced as a member of the X-Men in "Giant-Size X-Men" #1 in 1975, solidifying his role in the team.