Avengers Vol.1 #67
Ultron-6 rampages through Avengers Mansion! And Earth's Mightiest Heroes are helpless to stop the metal monster now composed of pure adamantium! After steamrolling the Avengers, Ultron flies away; but the Vision follows him back to his lair! Ultron plans to detonate a nuclear device in New York City! And only the synthezoid avenger stands in his way! Can the Vision derail his creator's atomic dreams?
First Printing: Aug 1969
Writers: Roy Thomas
Art: Barry Windsor-Smith and George Klein
Cover: Sal Buscema and Sam Grainger