Fantastic Four in "The Micro-World of Doctor Doom"
Reprinted from Fantastic Four (1961) #16.
20 pages.
Iron Man in "Face-to-Face With the Sinister Scarecrow"
Reprinted from Tales of Suspense (1959) #51.
13 pages.
Dr. Strange in "The House of Shadows"
Reprinted from Strange Tales (1951) #120.
9 pages.
Hulk in "The Metal Master"
Reprinted from The Incredible Hulk (1962) #6.
10 pages.