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 Dallas Police officers in the intersection of Elm and Houston streets following the assassination on November 22, 1963.

Original black and white photographic negative taken by Dallas Times Herald staff photographer William Allen. This image shows an armed Dallas Police officer in the intersection of Elm and Houston streets following the assassination on November 22, 1963.

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 in the intersection of Houston and Elm streets. The Dal-Tex Building at 501 Elm Street is 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 several Dallas Police officers holding shotguns, standing in the intersection of Houston and Elm streets near the Texas School Book Depository. The Dal-Tex Building at 501 Elm Street 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 a crowd gathered at the southeast corner of Elm and Houston streets at approximately 1 p.m. Police have used thick rope to keep the crowd on the sidewalk and out of the intersection. The front row of the crowd appears to consist mainly of school-age young people.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. The image shows some people on Houston Street in front of the Texas School Book Depository. A crowd had gathered outside the Dallas County Sheriff's Department offices on Houston Street on Sunday morning, November 24, 1963, to await the arrival of suspected assassin Lee Harvey Oswald from the city jail. Oswald was shot before the transfer could be completed. This image was taken after news of Oswald's shooting had spread.

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 crowd gathered at the entrance to the Texas School Book Depository. The Dal-Tex building, located at 501 Elm Street, can be seen in the background, on the other side of Houston Street.

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 Police officer standing in the street at the intersection of Houston and Elm streets outside the Texas School Book Depository. The Dal-Tex building is visible behind him; the Book Depository building is not visible.

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 crowd gathered in front of the Texas School Book Depository. Police officers and police motorcycles appear in the midst of bystanders around the southeast corner of the building; the crowd has spilled off the sidewalk into the intersection of Houston and Elm streets. Signs listing the publishers who leased space in the building can be seen on the south and east sides of the building's corner.

Original 35mm black and white 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 Police officer, holding a shotgun, standing in the street at the intersection of Houston and Elm streets outside the Texas School Book Depository. The Dal-Tex building and the County Records Building are visible behind him; the Book Depository building is not in the picture.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. The image shows a crowd gathered on Sunday morning, November 24, 1963, on the west side of Houston Street, reacting to the news that suspect Lee Harvey Oswald had been shot. Oswald was to be transferred from the city jail on the east side of downtown Dallas, to the county jail, which is located on the west side, bordering Dealey Plaza. As he was being escorted to the transport vehicle, Oswald was shot by Jack Ruby.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. The image shows a crowd gathered on Sunday morning, November 24, 1963, on the west side of Houston Street, reacting to the news that suspected assassin Lee Harvey Oswald had been shot. Oswald was to be transferred from the city jail on the east side of downtown Dallas, to the county jail, which is located on the west side, bordering Dealey Plaza. As he was being escorted to the transport vehicle, Oswald was shot by Jack Ruby.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. The image shows a crowd gathered on Sunday morning, November 24, 1963, on the west side of Houston Street, reacting to the news that suspected assassin Lee Harvey Oswald had been shot. Oswald was to be transferred from the city jail on the east side of downtown Dallas, to the county jail, which is located on the west side, bordering Dealey Plaza. As he was being escorted to the transport vehicle, Oswald was shot by Jack Ruby.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. The image shows a crowd gathered on Sunday morning, November 24, 1963, on the west side of Houston Street, reacting to the news that suspected assassin Lee Harvey Oswald had been shot. Oswald was to be transferred from the city jail on the east side of downtown Dallas, to the county jail, which is located on the west side, bordering Dealey Plaza. As he was being escorted to the transport vehicle, Oswald was shot by Jack Ruby. A corner of the Texas School Book Depository is visible on the right edge of the image.

Original black and white photographic negative taken by a Dallas Times Herald staff photographer. The image shows a crowd gathered on Sunday morning, November 24, 1963, on the west side of Houston Street, reacting to the news that suspected assassin Lee Harvey Oswald had been shot. Oswald was to be transferred from the city jail on the east side of downtown Dallas, to the county jail, which is located on the west side, bordering Dealey Plaza. As he was being escorted to the transport vehicle, Oswald was shot by Jack Ruby.