Original and new Avengers team-up. Don Heck and Roy Thomas biographies.
Don Heck took time off of his regular Avengers work to pencil this issue. John Buscema stepped filled in for Heck and his work was so liked by Marvel editoral that it lead to Buscema replacing Heck on the reguar avengers title, eventually completing over 50 issues!
Roy Thomas (W), Don Heck (P), George Roussos (P), Don Heck (CA)