Muhammad Ali: A Life in Pictures

Muhammad Ali photographed in 1962 when he was a 20-year old heavyweight contender known as Cassius Clay. The greatest of all time died today at age 74. Stanley Weston/Getty Images
Heavyweight champion Muhammad Ali stands over fallen challenger Sonny Liston, shouting and gesturing shortly after dropping Liston with a short hard right to the jaw on May 25, 1965, in Lewiston, Maine. The bout lasted only one minute into the first round. AP Photo/John Rooney
Cassius Clay's handlers hold him back as he is announced the new heavyweight champion of the world after a seventh round technical knockout of Sonny Liston at Convention Hall in Miami Beach on Feb. 25, 1964. AP Photo
Heavyweight champ Muhammad Ali attracts a following as he walks through New York's Times Square on May 25, 1977. AP Photo
Cassius Clay, as a young heavyweight contender from Louisville, Ky., May 17, 1962. Stanley Weston/Getty Images
Cassius Clay with his trainer Angelo Dundee at City Parks Gym in New York, Feb. 8, 1962. AP Photo/Dan Grossi
Cassius Clay after winning the gold medal in the light heavyweight division at the 1960 Rome Olympics. Central Press/Getty Images
Muhammad Ali after knocking down George Foreman during their bout in Kinshasa, Zaire, Oct. 30, 1974. AP Photo
World Heavyweight champion Muhammad Ali after a fight April 16, 1975 in Miami, Florida. Tim Chapman/Getty Images
The Beatles Paul McCartney, John Lennon, Ringo Starr, and George Harrison take a fake blow from Cassius Clay at his training camp in Miami Beach, Fla. on Feb. 18, 1964. AP Photo
Muhammad Ali with Black Muslim Leader Malcolm X outside the Trans-Lux Newsreel Theater on Broadway, Mar. 1, 1964. They had just watched a screening of Ali's title fight with Sonny Liston in Miami Beach. AP Photo
Muhammad Ali and Dr. Martin Luther King speak with reporters in Louisville, Ky., March 29, 1967. Ali was here for his court hearing to prevent his Army induction on April 28 in Houston. AP Photo
Muhammad Ali holds the torch before lighting the Olympic Flame during the Opening Ceremony of the 1996 Olympic Games in Atlanta. Michael Cooper/Getty Images
Cassius Clay throws his hands up in victory over Sonny Liston, Feb. 25, 1964 at Convention Hall in Miami. Focus on Sports/Getty Images
Cleveland Williams is spreadeagled on the canvas as referee Harry Kessler sends Muhammad Ali to a neutral corner during their heavyweight bout at the Astrodome in Houston, Nov. 14, 1966. AP Photo
Muhammad Ali and Joe Frazier at Madison Square Garden during the Fight of the Century on March 8, 1971. Frazier won in the 15th round. Referee Art Mercante is shown on the right. AP Photo
Joe Frazier sticks his chin out as Muhammad Ali points his fist towards him during a news conference in Kuala Lumpur, Malaysia on July 1, 1975 to promote the Thrilla in Manila title bout. AP Photo
Muhammad Ali prior to his bout with Joe Frazier in 1971. AP Photo/Joe Migon
Cassius Clay in New York, May 1963. Express/Getty Images
Andy Warhol photographing Muhammad Ali, his infant daughter, Hanna, and wife, Veronica, Aug. 18, 1977, at Ali's training camp in Deer Lake, Pa. AP Photo
Zaire's President Mobutu Sese Seko raises the arms of heavyweight champ George Foreman and Muhammad Ali in Kinshasa, Zaire, Sept. 22, 1974, prior to the Rumble in the Jungle. In one of boxing's most memorable moments, Ali stopped the fearsome Foreman to recapture the heavyweight title. AP Photo/Horst Faas
Muhammad Ali defeats Leon Spinks at the Louisiana Superdome in New Orleans, Sept. 15, 1978, to win the world heavyweight boxing title for the third time in his career, the first fighter ever to do so. Dirck Halstead/Liaison
Pope John Paul II with Muhammad Ali at the Vatican, June 6, 1982. AP Photo
Cassius Clay at his west end hotel in London in 1966 before his fight with Henry Cooper. B. Potter/Express/Getty Images
Muhammad Ali and his wife Lonnie enter the Kentucky Center for the Arts before the grand opening gala celebration for the Muhammad Ali Center, Nov. 19, 2005, in Louisville, Ky. AP Photo/Ed Reinke
Muhammad Ali during the Crystal Award ceremony at the World Economic Forum in Davos, Switzerland, Jan. 28, 2006. REUTERS/Andreas Meier
Muhammad Ali hugs former President Bill Clinton during the grand opening gala celebration for the Muhammad Ali Center, Nov. 19, 2005, in Louisville, Ky. AP Photo/Ed Reinke
Heavyweight boxing champ Cassius Clay, March 17, 1966, as he arrived at the Veterans building to appeal his 1A draft classification. AP Photo
Muhammad Ali is escorted from the Armed Forces Examining and Entrance Station in Houston by Lt. Col. J. Edwin McKee, April 28, 1967, after Ali refused Army induction. Ali says he was a conscientious objector who would not serve in the Army of a country that treated members of his race as second-class citizens. AP Photo
A group of top African American athletes from different sporting disciplines gather to give support and hear the boxer Muhammad Ali give his reasons for rejecting the draft during the Vietnam War, at a meeting of the Negro Industrial and Economic Union, held in Cleveland, June 4, 1967. Seated in the front row, from left to right: Bill Russell, Muhammad Ali, Jim Brown, and Kareem Abdul Jabbar. Standing behind them are: Carl Stokes, Walter Beach, Bobby Mitchell, Sid Williams, Curtis McClinton, Willie Davis, Jim Shorter, and John Wooten. Robert Abbott Sengstacke/Getty Images
Muhammad Ali addresses a gathering at a Black Muslim convention in Chicago, Feb. 25, 1968. AP Photo
Muhammad Ali takes part in prayers at a Russian mosque during his 12-day visit to the Soviet Union, June 1978. AP Photo
Cassius Clay points to a sign he wrote on a chalk board in his dressing room before his fight against Archie Moore in Los Angeles, Nov. 15, 1962, predicting he'd knock Moore out in the fourth round, which he went on to do. The sign also predicts Clay will be the next champ via a knockout over Sonny Liston in eight rounds. He did it in seven rounds. AP Photo/Harold P. Matosian
Heavyweight boxing champion Muhammad Ali riding a horse near the Sphinx and the pyramids at Giza, Egypt, 1964. Keystone/Hulton Archive/Getty Images
Muhammad Ali training for his fight against Brian London in London, Aug. 1966. R. McPhedran/Hulton Archive/Getty Images
Muhammad Ali arrives at "Celebrity Fight Night X", a charity event to raise money for the Muhammad Ali Parkinson Research Center at Barrow Neurological Institute, March 27, 2004 in Phoenix. Carlo Allegri/Getty Images
Muhammad Ali with his daughters Laila (9 months) and Hanna (2 years, 5 months) at Grosvenor House, Dec. 19, 1978. Frank Tewkesbury/Evening Standard/Getty Images
President Bush presents the Presidential Medal of Freedom, Nov. 9, 2005, to Muhammad Ali in the East Room of the White House. AP Photo/Evan Vucci
Muhammad Ali, with legendary photographer Howard Bingham, during the NBA All-Star basketball game, Feb. 15, 2009, in Phoenix. AP Photo/Matt Slocum
Muhammad Ali in training at the Royal Artillery Gymnasium in London, in 1966. Trevor Humphries/Getty Images