Hoo Hoo Who? is a catchy and interactive book written and illustrated by Mary Maier with speech pathologist Lauren Horton. Mouse’s Surprise Party is today, but Owl’s glasses are broken. It’s a good thing you came along! Can you use the clues to help Owl figure out which guest is at the door? Hoo hoo who could it be?  Children are encouraged to use expressive language while reading this adorable book that focuses on the importance of WH- questions for optimal language development.