The Bullwinkle Show - Season 1 Episode 114 Peabody's Improbable History - The First Kentucky Derby
Overview: Peabody and Sherman travel back to the first Kentucky Derby, where they find that Colonel Beauregard's horse has been struck by a mysterious sleeping sickness just before the race. With the derby about to begin, Peabody must quickly find a replacement horse to ensure Colonel Beauregard can compete and keep history on track.