Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen Friday afternoon after the assassination - between 12:30 and 1 p.m. This image shows the exterior of the Texas School Book Depository. Cars, people and police officers crowd around the base of the building. Windows are open on the building's upper floors, including the southeast corner window on the sixth floor. Piles of boxes can be seen through that window in an area that was later identified as the sniper's perch.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen Friday afternoon after the assassination - between 12:30 and 1 p.m. This image shows a Dallas Fire Department fire engine in the intersection of Elm and Houston streets. Police officers and cars and men wearing fire department coats and hats fill the intersection. Crowds can be seen on the sidewalks and people also lean out of office windows in the Dal-Tex Building.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy and Vice President Lyndon B. Johnson along with Lady Bird Johnson at the Fort Worth Chamber of Commerce breakfast at the Hotel Texas in Fort Worth on November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows two Dallas Police officers (Left: Inspector J. Herbert Sawyer. Right: Marvin Wise.) guarding the entrance to the Texas School Book Depository on November 22, 1963 after the assassination. The officer on the right holds a shotgun in his left hand.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen Friday afternoon after the assassination. This image shows Dallas Police officers outside the entrance to the Texas School Book Depository.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows Dallas Police officers on the northeast corner of the Texas School Book Depository on November 22, 1963. Police officers have used rope and vehicles to separate the crowd from the building.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows Dallas Police officers on the northeast corner of the Texas School Book Depository on November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy and Vice President Lyndon B. Johnson along with Lady Bird Johnson at the Fort Worth Chamber of Commerce breakfast at the Hotel Texas in Fort Worth on November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy and Vice President Lyndon B. Johnson at the Fort Worth Chamber of Commerce breakfast at the Hotel Texas in Fort Worth on November 22, 1963. Lady Bird Johnson is at the left edge of the picture.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy and Vice President Lyndon B. Johnson along with Lady Bird Johnson at the Fort Worth Chamber of Commerce breakfast at the Hotel Texas in Fort Worth on November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy exiting the Hotel Texas in Fort Worth on the morning of November 22, 1963. The small crowd surrounding President Kennedy includes Governor John Connally, Assistant White House Press Secretary Malcolm Kilduff, Congressman Jim Wright and Vice President Lyndon B. Johnson.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy shaking hands with the crowd following his speech in the parking lot of the Hotel Texas in Fort Worth on the morning of November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy shaking hands with a horse-mounted deputy sheriff at the end of his speech in the parking lot of the Hotel Texas in Fort Worth on the morning of November 22, 1963. Tarrant County Deputy Sheriff Raymond "Sonny" Fisher, in the background, awaits his turn to shake the president's hand.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. Left to right the dignitaries are Fort Worth Chamber of Commerce president Raymond Buck, Democratic state committee woman Marjorie Belew, Texas State Senator Donley "Don" Kennard, Senator Ralph Yarborough (behind Kennedy's right shoulder), Texas Governor John B. Connally, Vice President Lyndon B. Johnson, and President John F. Kennedy. This image shows President Kennedy at the podium addressing the audience in the parking lot of the Hotel Texas in Fort Worth on the morning of November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. Left to right the dignitaries are Congressman Jim Wright, Fort Worth Chamber of Commerce president Raymond Buck, Democratic state committee woman Marjorie Belew, Texas State Senator Donley "Don" Kennard, Senator Ralph Yarborough, Texas Governor John B. Connally and President John F. Kennedy. This image shows President Kennedy at the podium addressing the audience in the parking lot of the Hotel Texas in Fort Worth on the morning of November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy at the podium addressing the audience in the parking lot of the Hotel Texas in Fort Worth on the morning of November 22, 1963. Texas State Senator Donley "Don" Kennard appears on the left; to the viewer's right of President Kennedy, Texas Governor John Connally and Vice President Lyndon B. Johnson are visible.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy at the podium addressing the audience in the parking lot of the Hotel Texas in Fort Worth on the morning of November 22, 1963. Texas State Senator Donley "Don" Kennard appears on the left; to the viewer's right of President Kennedy, Texas Governor John Connally and Vice President Lyndon B. Johnson are visible.

Original 35mm black and white negative taken by Dallas Times Herald staff photographer William Allen. This image shows President Kennedy shaking hands with the crowd following his speech in the parking lot of the Hotel Texas in Fort Worth on the morning of November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows the recreation of the sniper's perch by the Dallas Police on the sixth floor of the Texas School Book Depository on November 22, 1963. Police moved the boxes during their search for evidence; this recreation shows the boxes after the police had put them back in what they thought were their original positions.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows the recreation of the sniper's perch by the Dallas Police on the sixth floor of the Texas School Book Depository on November 22, 1963. Police moved the boxes during their search for evidence; this recreation shows the boxes after the police had put them back in what they thought were their original positions.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows three men (front to back, Harold Doyle, John Gedney, and Gus Abrams, who is hidden behind John Gedney) being escorted to the Sheriff's office by Dallas Police officers, Billy Bass in the front and Marvin Wise in the rear, on November 22, 1963, about 90 minutes after the assassination.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows three men (front to back, Harold Doyle, John Gedney, and Gus Abrams) being escorted to the Sheriff's office by Dallas Police officers, Billy Bass in the front and Marvin Wise in the rear, on November 22, 1963, about 90 minutes after the assassination. The Texas School Book Depository is visible in the background.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows three men (front to back, Harold Doyle, John Gedney, and Gus Abrams who is hidden behind Gedney) being escorted to the Sheriff's office by Dallas Police officers, Billy Bass in the front and Marvin Wise in the rear, on November 22, 1963. The Texas School Book Depository is visible in the background.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen Friday afternoon after the assassination. This image shows an unidentified witness speaking with law enforcement in front of the Texas School Book Depository.