| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 3 | Sins of the Father | |
| 2 | TNG | 4 | Reunion |
| Series : | TNG Season 3 |
| Episode : | Sins of the Father |
| Series : | TNG Season 4 |
| Episode : | Reunion |
| © Graham & Ian Kennedy | Page views : 14,404 | Last updated : 6 Mar 2004 |
