| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TOS | 3 | For the World is Hollow and I Have Touched the Sky |
| Series : | TOS Season 3 |
| Episode : | For the World is Hollow and I Have Touched the Sky |
| © Graham & Ian Kennedy | Page views : 18,785 | Last updated : 1 Oct 2013 |
