It's not often that a pen finds itself at the very center of an international event, but that's exactly what happened 52 years ago when John F. Kennedy visited Cologne, West Germany. His host was Chancellor Konrad Adenauer, who invited the young U.S. president to sign the Golden Book (Cologne's official guest book), then found he had no pen on him. The incident was a second away from being a national humiliation until J.F.K. came smoothly to the rescue. Without missing a beat, J.F.K. reached into his pocket and produced his own pen.