Fred W. · Fred Wirt · Fred Worth
Gem Book Publishers · Universal Studios
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Diamonds, Third Edition | 978-1-887651-09-7 | 2003 |
| Emeralds | 978-1-887651-05-9 | 2001 |
| Jade | 978-1-887651-06-6 | 2001 |
| Opals | 978-1-887651-04-2 | 2000 |
| Pearls | 978-1-887651-08-0 | 2002 |
| Rubies & Sapphires, Fourth Edition | 978-1-887651-10-3 | 2003 |
| Tremors 2: Aftershocks | 978-0-7832-2802-0 | 1998 |