What are the “Hidden Years” referred to in the title?
JB: During the time that the X-Men did not have their own title, their guest appearances in other titles — CAPTAIN AMERICA, AMAZING SPIDER-MAN, MARVEL TEAM-UP — tended to be played as if the rest of the Marvel Universe did not know where the X-Men had gone. Hence, “hidden”. (As someone pointed out, given “Marvel Time” the book should probably have been titled “Hidden Weeks”.
JB: During the time that the X-Men did not have their own title, their guest appearances in other titles — CAPTAIN AMERICA, AMAZING SPIDER-MAN, MARVEL TEAM-UP — tended to be played as if the rest of the Marvel Universe did not know where the X-Men had gone. Hence, “hidden”. (As someone pointed out, given “Marvel Time” the book should probably have been titled “Hidden Weeks”.