| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Down at the Docks | Paperback | 978-0-385-72013-7 | 2010 |
| Down at the Docks | Hardcover | 978-0-375-42064-1 | 2009 |
| Down At the Docks | Paperback | 978-1-61523-517-9 | 2009 |
| Drums along the Congo: On the Trail of Mokele-Mbembe, the Last Living Dinosaur | Hardcover | 978-0-395-58707-2 | 1993 |
| Drums Along the Congo: On the Trail of Mokele-Mbembe, the Last Living Dinosaur | Paperback | 978-0-395-67071-2 | 1993 |
| The Search for the Pink-Headed Duck | Hardcover | 978-0-395-50552-6 | 1991 |
Doubleday · HarperCollins · Houghton Mifflin · Random House