The Avengers #61

In "Some Say the World Will End in Fire... Some Say in Ice!", the Avengers are caught between a mystical visitation and a looming threat when the astral form of Dr. Strange appears to seek their aid while the Vision recovers. With Black Panther and Hawkeye on the scene, and the Black Knight mysteriously in peril, the team faces a mystery that blends cosmic intrigue with urgent danger. Written by Roy Thomas, with dynamic art by John Buscema and George Klein, this 1969 classic features cover pencils and inks by Buscema and Klein.