JFK: The Only President To Have Known Superman's Secret Identity
From Dial B For Blog:
The story revolves around Superman encouraging the youth of America to join Kennedy’s “Presidential Fitness Program.” This program was a nationwide campaign to encourage physical fitness in America’s young people. It was prepared “in close cooperation” with President Kennedy, and originally scheduled for publication in Superman #168, cover-dated April 1964. However, Kennedy was assassinated in Dallas, Texas, on November 22, 1963, and DC decided not to run the story.
(DC eventually did run the story later.)



So, besides Oswald, the Russians, the Mafia, Castro, the CIA, and the man on the grassy knoll being suspects in killing Kennedy, maybe we need to add Superman, who could have been afraid of Kennedy giving him away.
Posted by: Woody | 07/15/2007 at 08:33 PM