Preface. In 1887, 22 years after his assassination, Abraham Lincoln's coffin was pried open for inspection of his body - not to determine whether he died of a bullet fired from John Wilkes Booth's derringer, but to ascertain whether he was in the casket. (Charles Roberts)

Foreward. No single subject has caused such debate or created such controversy in the past three years as the assassination of President John F. Kennedy. (Pierre Salinger)