Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy greeting the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy greeting the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy greeting the crowd at Love Field on the morning of November 22, 1963. Mrs. Kennedy is visible at the left edge of the picture.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President and Mrs. Kennedy greeting the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows the President and Mrs. Kennedy among the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows Jacqueline Kennedy, followed by Hugh Sidey of Time Magazine, greeting the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy, followed by Secret Service Agent Roy Kellerman, at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy, followed by Secret Service Agent Roy Kellerman, at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy, followed by Secret Service agent Roy Kellerman (partially cut off by the right edge of the image) approaching the fence line at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy waving to the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy, followed by Secret Service Agent Roy Kellerman, greeting the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy, followed by Secret Service Agent Roy Kellerman, greeting the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy greeting the crowd at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. This image shows President Kennedy at Love Field on the morning of November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald and United Press International newspaper photographer Darryl Heikes showing the presidential motorcade turning from Harwood Street onto Main Street in downtown Dallas. Secret Service Agent Clint Hill, assigned to Jacqueline Kennedy, occasionally rode on the rear bumper of the president's car, as seen in this image, when the crowds grew heavy.

Original black and white photographic negative taken by Dallas Times Herald and United Press International newspaper photographer Darryl Heikes. This image shows the presidential limousine completing the turn onto Main Street from Harwood Street in downtown Dallas. The motorcycle officer in the foreground is Billy Joe Martin.

Original black and white photographic negative taken by Dallas Times Herald and United Press International newspaper photographer Darryl Heikes. This image shows the presidential motorcade progressing down Main Street. The motorcycle officer in the foreground is Bobby Weldon Hargis.

Original black and white photographic negative taken by Dallas Times Herald and United Press International newspaper photographer Darryl Heikes. This image, although blurry, shows the crowds along Main Street and some of the cars in the presidential motorcade. The driver of the white car, wearing a white hat, was Texas Highway Patrolman Milton Wright; his passengers included Dallas Mayor Earle Cabell and his wife Dearie.

Original black and white photographic negative taken by Dallas Times Herald and United Press International newspaper photographer Darryl Heikes. This image shows the crowd on Main Street after the presidential motorcade passed by.

Original black and white photographic negative taken by Dallas Times Herald and United Press International newspaper photographer Darryl Heikes. This image shows the crowd on Main Street after the presidential motorcade passed by.

Original black and white photographic negative taken by Dallas Times Herald staff photographer Bill Beal. This image shows a camera misfire.

Original black and white photographic negative taken by Dallas Times Herald staff photographer Bill Beal. This image shows the crowd gathered on Main Street awaiting the presidential motorcade. The image was taken from a balcony at the Adolphus Hotel.

Original black and white photographic negative taken by Dallas Times Herald staff photographer Bill Beal. This image shows the crowd gathered on Main Street awaiting the presidential motorcade. The image was taken from a balcony at the Adolphus Hotel.