Robert "Bob" Hill W. Jackson is an American photographer. In 1964, Jackson, then of the Dallas Times-Herald, was awarded the Pulitzer Prize for Photography for his photograph of the murder of Lee Harvey Oswald by Jack Ruby.
Jackson was riding in a media car convertible of President John F. Kennedy's motorcade through Dealey Plaza, and, had just used up the film in the camera he was using just prior to reaching the plaza. He has stated that three seconds after the third and final volley of shots that he remembered hearing, he looked at the Texas School Book Depository and he saw some men together on its fifth floor looking out their window pair while they were looking upwards, above themselves. Jackson then looked upwards at the sixth floor, farthest east, half-open window above those men and he briefly saw about half of a rifle, including 8" to 10" of its wood stock, being withdrawn from the window, but Jackson did not remember seeing a scope on the weapon, nor did he see an assassin's face, body, nor arms holding the weapon.