Houghton Mifflin · Mariner Books · Houghton Mifflin · Houghton Mifflin Harcourt
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| How to Spot an Owl | 978-1-881527-36-7 (1-881527-36-0) | 1994 | Clay Sutton |
| How to Spot Butterflies | 978-0-395-89275-6 (0-395-89275-9) | 1999 | " |
| How to Spot Hawks and Eagles | 978-1-57630-000-8 (1-57630-000-5) | 1996 | " |