The Smelly Mystery: Little Monster Private Eye

The Lost Wish (Little Monster Private Eye)

Little Monster's Bedtime Book

Mercer Mayer's Little Monster at School

Professor Wormbog in Search for the Zipperump-a-Zoo (Classic Collectible Series)

Mercer Mayer's Herbert the Timid Dragon (A Golden Star Reader)

Little Monster at Home

Little Monster's Word Book

How the Trollusk Got His Hat

Little Monster Treasury Book