T/K · Thomas K · Thomas Knauff · Thomas L.
Knauff & Grove · Robert Davies Pub
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| After Solo | 978-99967-728-9-4 (99967-728-9-6) | 1995 |
| Glider Basics from First Flight to Solo | 978-0-9605676-3-8 (0-9605676-3-1) | 1984 |
| Glider Basics from Solo to License | 978-0-9605676-2-1 (0-9605676-2-3) | 1990 |