| title | ISBN-13 | year of publication |
|---|---|---|
| Elephants on the Beach | 978-0-915965-01-4 | 1979 |
| Illustrating Nature: Right-Brain Art in a Left-Brain World | 978-0-915965-08-3 | 2004 |
| The Redrock Canyon Explorer | 978-0-915965-04-5 | 1998 |
| The Redrock Canyon Explorer: A Virtual Visit to an Imaginary Canyon | 978-0-915965-06-9 | 1999 |