In 1969, I think it featured an old, old live-action spot where kids are playing. In 1971 (or 1972), SS changed it into the animated closing theme with kids and muppets where it starts with Grover flying on an airplane and ends with Herry growing flowers and Oscar (naked) holding the SS lampost sign. Bert, Ernie, Big Bird, Cookie Monster, Kermit the Frog, Little Bird, Roosevelt Franklin, Herbert Birdsfoot, Sherlock Hemlock, Lefty, Professor Hastings and the AM's are in it, too! Then, like in the late '70's (or the early '80s's), it was the live spot with Barkley the Dog and the kids.