This issue is a variant of The Avengers (Marvel, 1963 series) #164 [30¢ Cover].
Footnote corrections and additions for this issue appear in the letters page to Avengers #168.
Part 1 of 3.
John Byrne credited with dialogue in page 14 panel 7, "visual bits," and the introduction of Maximoff in the letters page to Avengers #168.
Letters on The Avengers #160.