Written by Wendy Wax
Illustrator Ernie Kwiat
Published 2007
Publisher Reader's Digest
Series Guess Who
ISBN 0794412114

Guess Who, Elmo! is a 2007 Sesame Street board-and-flap book by Wendy Wax, with illustrations by Ernie Kwiat.

Rhymes on each spread prompt readers to guess what character is hiding behind the big flap on each spread. The 10-page book includes four large flaps, plus a large pop-up on the last spread.

Four Sesame Street characters -- Zoe, Big Bird, Cookie Monster and Oscar the Grouch -- are waiting for Elmo (and readers) to "guess who".