| Program | Role | Version | Date |
|---|---|---|---|
| World War II | Programmer | 1992-01-01 | |
| Death of a President | Programmer | 1991-01-01 | |
| The History File | Programmer | 1.1 | 1988-01-01 |
| A Roman Mystery (NewsDisk) | Author | ||
| A Roman Mystery (scans) | Publisher | ||
| A Roman Mystery (TCOS) | Author | ||
| Explore a Roman Fort | Programmer | ||
| Hadrian's Wall | Programmer | ||
| Second World War | Programmer | ||
| The Search | Programmer |
