Avengers Vol.1 #68
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 Hank Pym 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! Will Thor and Goliath be able to keep the awesome Ultron at bay while Yellowjacket's plan takes time to develop? The world is holding its breath!
Printed: Sept 1969
Writers: Roy Thomas
Art: Sal Buscema and Sam Grainger
Cover: Sal Buscema and Sam Grainger