Polly appeared in at least two segments on Sesame Street: one in which she recites the alphabet with Grover, and another where she demonstrated five fingers. Decades later, she's still recognized for appearing on the show, having been identified by a pre-schooler as she recounted in Sesame Street: A Celebration - 40 Years of Life on the Street. She also appears in Episode 0393 during the "One of These Things" segment and the final scene in the arbor swinging on the tire.
In his 2008 book Street Gang: The Complete History of Sesame Street, Michael Davis describes her as someone who, as a child, would have her handprints all over Sesame Street, and that she and her sister Kate were "Sesame Street’s in-house, on-demand focus group" who contributed countless ideas for script material on the show. One notable example is Christmas Eve on Sesame Street, directed and co-written by their dad. Polly recounts that the plot came from her and her sister wondering how Santa Claus got down the chimney to deliver presents. The end product is a special that Dulcy Singer called "Jon's baby from the beginning. If you want to see his soul, watch Christmas Eve on Sesame Street."
- ↑ Sesame Street: A Celebration - 40 Years of Life on the Street page 120
- ↑ 2.0 2.1 Street Gang: The Complete History of Sesame Street page 274-275
- ↑ Memoirs of a Muppets Writer, pages 255-259