| title | ISBN-13 | year of publication |
|---|---|---|
| Death at their heels | 978-0-396-07075-7 | 1975 |
| Freedom Crossing | 978-0-590-44569-6 | 1991 |
| Save the Florida Key Deer | 978-0-525-65232-8 | 1998 |
| The Endangered Florida Panther | 978-0-525-65114-7 | 1993 |
| The Threatened Florida Black Bear | 978-0-525-65196-3 | 1995 |
| The Vanishing Manatee | 978-0-525-65024-9 | 1990 |
G. C. · G. Clark · M.C. · M. Clark · M G*** · Margaret Clark
Dodd Mead · Dutton · Scholastic