AVENGERS (1963) #68 (VG)

Inside Ultron's underground fortress, the Avengers halt the adamantium robot's plan to turn New York into a nuclear wasteland! Unfortunately though the metal despot escapes and remains a deadly threat! So Yellowjacket and Dr. Myron MacLain set a trap for Ultron-6 at the United Nations Headquarters! But the powerful robot storms into the U.N. as a full-bodied robot! Uh-oh, Earth's Mightiest Heroes were not expecting that!