https://www.abebooks.com/9780836807165/Harrys-Sandbox-Surprise-Harry-Hippo-0836807162/plp
Harry's Sandbox Surprise (Harry the Hippo) - Gaban, Jesus; Colorado, Nani: 9780836807165 - AbeBooks
Gareth Stevens Pub - 1992 - Low prices on new and used copies of books. 30 days return policy
the hippo