Meet Mr. Snuffle-upagus

From Muppet Wiki

Written by	Liza Alexander
Illustrator	Ron Fritz
Published	1988
Publisher	Random House Books for Young Readers
Series
ISBN	0394894332

Meet Mr. Snuffle-upagus is a 1988 Sesame Street book in which the adults meet Mr. Snuffleupagus for the first time. In the Sesame Street episode that reveals Mr. Snuffleupagus, Big Bird arranges the meeting by yelling a signalling word. In this book, however, the adults meet Snuffy by chance when he takes a toaster to the Fix-It Shop to be fixed.