Original 35mm black and white negative taken by Dallas Times Herald staff photographer William Allen. This image shows Dallas Police officers at the Texas School Book Depository on Noviembre 22, 1963. The negative is on Kodak Tri-X Pan Film. This image is labeled #14 on section 1 of negative strip 26.The old TMS record for the images on this negative strip indicate that the photographer was William Allen. Based on research conducted by collections intern Mark Davies in Junio and Julio 2012, curatorial and collections staff concluded that Allen did indeed take these pictures. (Lindsey Richardson, 7/24/13) Also noted at that meeting, these pictures were taken between 12.30 and 1pm on the afternoon of the assassination. (Lindsey Richardson, 10/15/13)Police outside the Texas School Book Depository