| # | Book Title | Author | |
|---|---|---|---|
| 1 | Duck and Hippo in the Rainstorm | London, Jonathan | |
| 2 | Lost and Found | London, Jonathan | |
| 3 | Duck and Hippo Give Thanks | London, Jonathan | |
| 4 | Secret Valentine, The | London, Jonathan |
Juvenile Series and Sequels
| # | Book Title | Author | |
|---|---|---|---|
| 1 | Duck and Hippo in the Rainstorm | London, Jonathan | |
| 2 | Lost and Found | London, Jonathan | |
| 3 | Duck and Hippo Give Thanks | London, Jonathan | |
| 4 | Secret Valentine, The | London, Jonathan |