F. F. · F.T. · Frits Forrer · T. F.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Five Years Under The Swastika | 978-0-9714490-0-8 (0-9714490-0-7) | 2000 |
| The Fun Of Flying | 978-0-9714490-3-9 (0-9714490-3-1) | 2004 |
| Thunderclouds Over America | 978-0-9822207-2-6 (0-9822207-2-3) | 2010 |