| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 7 | Preemptive Strike | |
| 2 | TNG | 6 | Descent, Part 1 |
| Series : | TNG Season 7 (Disc 6) |
| Episode : | Preemptive Strike |
| Series : | TNG Season 6 (Disc 6) |
| Episode : | Descent, Part 1 |
| © Graham & Ian Kennedy | Page views : 11,482 | Last updated : 14 Dec 2014 |
