| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | Star Trek : Department of Temporal Investigations 2 - Forgotten History | |||
| 2 | TOS | 2 | Journey to Babel |
| Novel : | Star Trek : Department of Temporal Investigations 2 - Forgotten History |
| Series : | TOS Season 2 |
| Episode : | Journey to Babel |
| © Graham & Ian Kennedy | Page views : 2,570 | Last updated : 28 Dec 2016 |
