- Frank Oz (Bert)
- Sonia Manzano (Maria Figueroa Rodriguez)
- Roscoe Orman (Gordon Robinson)
- Martin P. Robinson (Telly Monster/Aloysius Snuffleupagus/Irvine/Slimey (voice))
- Suki Lopez (Nina)
- Violet Tinnirello (Charlie)
- Jennifer Barnhart (Zoe (voice))
- Ryan Dillon (Elmo (voice))
- Alan Muraoka (Alan)
Sesame Street — S17E104
Episode: Episode 2199
Air Date: 1986-04-10
Overview
At the library, Telly Monster looks for a book called The Book of Trees. Micki helps him look in the section it should be in, but it's not there. Maria finishes painting a chair for Mrs. Osborne when Elmo comes by, eager to play a game. Maria proposes a guessing game where Elmo must figure out where her WET PAINT sign must go. Sponsors: M, Q, 9