John Nesbitt
Narrator (voice)
Roger Moore
Man Examining Film Strip (uncredited)
Emmett Vogan
Lab Assistant (uncredited)
Francisco Fernando de Austria
Self (archive footage)
Winston Churchill
Self (archive footage)
King Edward VIII of the United Kingdom
Self (archive footage)
Kaiser Wilhelm II of Germany
Self (archive footage)
William McKinley
Self (archive footage)
Theodore Roosevelt
Self (archive footage)
William Howard Taft
Self (archive footage)