| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| A Present for Grandfather | 978-0-8075-6625-1 | 1998 | Gertrude Chandler Warner |
| Benny Goes Into Business | 978-0-8075-0637-0 | 1999 | " |
| Benny's New Friend | 978-0-8075-0649-3 | 1998 | " |
| The Magic Show Mystery | 978-0-8075-4939-1 | 1998 | " |
| Watch Runs Away | 978-0-8075-8681-5 | 1999 | " |
D D · D. M. · Daniel Duffy · Daniel M. · Daniel Mark · M.D · M. Duffy · Mark Duffy