Episode #3.15
- Episode aired Dec 3, 1971
- TV-Y
- 55m
![Leslie Carrara-Rudolph, David Rudman, Matt Vogel, and Ryan Dillon in Sesame Street (1969)](https://m.media-amazon.com/images/M/MV5BODM4NDI3OTcxN15BMl5BanBnXkFtZTgwNjc3MjIwMTI@._V1_QL75_UX190_CR0,0,190,281_.jpg)
Mr. Hooper welcomes the viewer, then introduces "the world's foremost expert on the alphabet..." Celebrity-Pat Paulsen says the alphabet.Mr. Hooper welcomes the viewer, then introduces "the world's foremost expert on the alphabet..." Celebrity-Pat Paulsen says the alphabet.Mr. Hooper welcomes the viewer, then introduces "the world's foremost expert on the alphabet..." Celebrity-Pat Paulsen says the alphabet.