Lady Bird Johnson provided a vivid, firsthand account of the assassination of JFK, describing the "sharp, loud" sounds of the shots and the "poignant" sight of Mrs. Kennedy's blood-caked pink dress at the hospital. She captured the shock and sorrow of the day, from the chaos in Dallas to the somber flight back to Washington, D.C., where her husband was sworn in as president. Credit: @pbs | History In Pictures