| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| It's TIME to Make MORE Money with Watch Repairs | 978-0-9728649-6-1 (0-9728649-6-2) | 2004 |
| Simplified Mechanical Watch Repair for Profit: An Illustrated Guide | 978-0-9728649-4-7 (0-9728649-4-6) | 2003 |
D G · Dan Guenther · Dana Gunders · Dana Gynther · Denny Gunderson · Donna Guenther · Duane Gundrum