6 books in series

Penguin Classics Marvel Collection

Penguin Classics Marvel Collection is a 6-book series with 6 released primary works first released in 2003 with contributions by Stan Lee, Steve Ditko, Jack Kirby, Joe Simon, Jim Steranko, John Romita Sr., Don McGregor, Rich Buckler, Billy Graham, Roy Thomas, Werner Roth, Don Heck, Neal Adams, Arnold Drake, Gary Friedrich, George Tuska, John Buscema, and Sal Buscema.

The Amazing Spider-Man
Captain America
Black Panther
X-Men
The Avengers
Fantastic Four