PWLIS backer Tom B. pointed me toward this genuinely mind-bending video of a Mr. Samuel J. Seymour, who in 1956 appeared on the TV show "I've Got a Secret." His secret? He was at Ford's Theater on April 14, 1865 - yes, that night.
The funniest part, which Seymour also wrote about in the article they mention, is how as a five year old, he thought the crowd was upset because Booth had fallen from the president's box and hurt himself. At age 96, he also noted this: "I sometimes relive the horror of Lincoln's assassination, dozing in my rocker as an old codger like me is bound to do." Ha!