Marks the first time "The Ballad of Paladin", sung by johnny western, was used in the closing credits.
Written by Gene Roddenberry (later creator of "The Lieutenant" and "Star Trek"), for which he won a Writers Guild of America award.
Marks the second time "The Ballad of Paladin" was used in the closing credits. The first was in episode 1, "Three Bells to Perdido".