| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 3 | Allegiance | |
| 2 | TNG | 3 | Evolution | |
| 3 | TNG | 5 | The Masterpiece Society | |
| 4 | TNG | 6 | Realm of Fear | |
| 5 | VOY | 4 | Scientific Method |
| Series : | TNG Season 3 |
| Episode : | Allegiance |
| Series : | TNG Season 3 |
| Episode : | Evolution |
| Series : | TNG Season 5 |
| Episode : | The Masterpiece Society |
| Series : | TNG Season 6 |
| Episode : | Realm of Fear |
| Series : | VOY Season 4 |
| Episode : | Scientific Method |
| © Graham & Ian Kennedy | Page views : 13,668 | Last updated : 3 Apr 2014 |
