Avengers #33 (1966) VF

Cover pencils by Don Heck and Jack Kirby (alterations), inks by Don Heck. "To Smash a Serpent," script by Stan Lee, art by Don Heck; With Captain America hostage, the Avengers can't attack the serpents; Bill Foster walks out on Goliath, because of this; Captain America seems to have been brainwashed by the Sons, turning him into a fascist; The Avengers attend a Sons of the Serpent meeting while Hawkeye and the Black Widow attempt a rescue mission to save Captain America; During the meeting, Goliath argues with the Sons of the Serpent, but is attacked by a brainwashed Captain America; After a brief battle, Goliath follows the escaping Serpents to their ship; Black Widow finds the real Captain America captive and rescues him. Avengers roll call: Captain America, Hawkeye, Goliath, and the Wasp.