Muhammad Ali admiring himself in a car mirror. 1966. © Thomas Hoepker / Magnum Photos

World heavyweight champion Muhammad Ail walks underneath elevated trains. 1966. © Thomas Hoepker / Magnum Photos

Muhammad Ali admiring himself in a car mirror. 1966. © Thomas Hoepker / Magnum Photos

Muhammad Ali, boxing world heavyweight champion in downtown Chicago in front of Commodities Exchange. 1966. © Thomas Hoepker / Magnum Photos

Muhammad Ali, formerly Cassius Clay, boxing world heavyweight champion in Chicago, on a bridge over the Chicago River. Chicago, Illinois. USA. 1966. © Thomas Hoepker / Magnum Photos