This holiday special goes back in time to show how Elmo's ancestors--not to mention those of Grover, Big Bird, Bert, Ernie, Oscar the Grouch and Cookie Monster--helped transform "the most unfriendly street in town" into the bright, kind, music-filled place it is today.
| Directing | Matt Vogel | Director |
| Writing | Geri Cole | Writer |
| Writing | Ken Scarborough | Writer |
| Editing | Memo Salazar | Editor |
| Art | David Gallo | Production Design |
| Production | Mindy Fila | Producer |
| Production | Brown Johnson | Executive Producer |
| Production | Karyn Leibovich | Producer |
| Production | Stephanie Longardo | Producer |