Actually, it seems the extended repeating ending was a mini trend in those days. Two examples come imediately to mind, "Hey Jude" by the Beatles and "Atlantis" by Donovan.
Both were released in 1968. "Two Hangmen" was released in 1969, I believe.
I love finding these old songs that were big hits at one time and then all but forgotten. Thanks for the post, Karla...