| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TOS | 2 | The Trouble With Tribbles | |
| 2 | DS9 | 2 | Blood Oath |
| Series : | TOS Season 2 |
| Episode : | The Trouble With Tribbles |
| Series : | DS9 Season 2 |
| Episode : | Blood Oath |
| © Graham & Ian Kennedy | Page views : 21,784 | Last updated : 13 Jun 2004 |
