A few episodes of the show has been fallen into the public domain. In 2000, RKO Home Video released In The Beginning, which contains seasons 1-4. In 2001, RKO released The Golden Era, which contains seasons 5-8. In December 2001, RKO released The Mystery Era, which contains seasons 9-12. In January 2002, RKO released The Solider Era, which contsins seasons 13-16. In March 2002, RKO released The Justice Era, which contains seasons 17-20. In May 2002, RKO released The Marvelous Era, which contains seasons 21-24. In September 2002, RKO released The Final Chapters, which contains the last few seasons. In November 2002, RKO released the Complete 100% High Quality DVD Collection, which contains all episodes.