53 books • 4 series
The Adventures of Willie the Hippo
Le Avventure di Willie l'Ippopotamo
Hidden Disabilities and Conditions
Freshman Handbook
Healthy Me, Happy We
Willie Saves the Wedding
Lockdown Jarod
Willie and the Lion Cubs (Willie the Hippo, #3)
Lucy, the Inquisitive Calf
Human Resources A to Z
Willie l'ippopotamo e i suoi amici!
The Exploding Turnips
Arthur Ramsbottom and the Dinkle Donkle
Willie geht schwimmen
Willie the Hippo Mindfulness Colouring Book
Willie's Birthday Party
Willie Goes for a Swim
Willie the Hippopotamus and Friends
The Train Blog
The Alphabetical General Knowledge Quiz Book
The Alphabetical General Knowledge Quiz Book 2
Do and Done
Alphabetical General Knowledge Quiz Book, The: Over 1,100 Questions to Test Your Knowledge!
Alphabetical General Knowledge Quiz Book 2, The: 1,000 Questions to Test Your Knowledge!