President Kennedy speaks in Fort Worth on the morning of his assassination (John F. Kennedy Library).

President Kennedy greets crowd at Fort Worth rally (John F. Kennedy Library).

22 November 1963. President and Mrs Kennedy arrive at Love Field, Dallas, Texas. Photograph by Cecil Stoughton, White House, in the John F. Kennedy Presidential Library and Museum, Boston.

22 November 1963. President and Mrs Kennedy arrive at Love Field, Dallas, Texas. Photograph by Cecil Stoughton, White House, in the John F. Kennedy Presidential Library and Museum, Boston.

22 November 1963. Presidential motorcade on Main Street at Griffin Street, Dallas, Texas. Photograph by Cecil Stoughton, White House, in the John F. Kennedy Presidential Library and Museum, Boston.

22 November 1963. Judge Sarah T. Hughes administers the Presidential Oath of Office to Lyndon Baines Johnson aboard Air Force One, at Love Field, Dallas, Texas. Mrs Johnson, Mrs Kennedy, Jack Valenti, Representative Albert Thomas, Representative Jack Brooks, Associate Press Secretary Malcolm Kilduff (holding microphone), and others witness. Photograph by Cecil Stoughton, White House.

President John F. Kennedy's flag-draped casket lies in state in the East Room of the White House, Washington, DC. Two members of the honor guard attend the casket.

The Kennedy family leaves the Capitol on Sunday, November 24, 1963 (John F. Kennedy Library).

From left, Robert Kennedy, Jacqueline Kennedy, and Edward Kennedy lead the funeral procession from the White House to St Matthew's Cathedral on November 25, 1963 (John F. Kennedy Library).

25 November 1963. Funeral services for President Kennedy. Original US Army Signal Corps caption: 'The remains of the late President John F. Kennedy leaving the United States Capitol.' Photograph by SP/4 David S. Schwartz, US Army, in the John F. Kennedy Presidential Library and Museum, Boston.

25 November 1963. Procession to St Matthew's Cathedral. Caisson and casket, standard bearers, riderless horse ('Black Jack'), mourners. White House, North Front. Photograph by Abbie Rowe, National Park Service, in the John F. Kennedy Presidential Library and Museum, Boston.

The military honor guard prepares to fold the flag that draped Kennedy's coffin. Once folded, the flag will be presented to Jacqueline Kennedy (John F. Kennedy Library). Photograph by Abbie Rowe, National Park Service, in the John F. Kennedy Presidential Library and Museum, Boston.

The military honor guard approaches Kennedy's gravesite (John F. Kennedy Library).

President Lyndon Johnson meets with Robert Kennedy in October 1964 (Lyndon B. Johnson Library).