| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TOS | 1 | The Enemy Within | |
| 2 | Star Trek : The Motion Picture | |||
| 3 | Star Trek III : The Search for Spock | |||
| 4 | Star Trek VI : The Undiscovered Country |
| Series : | TOS Season 1 |
| Episode : | The Enemy Within |
| Film: | Star Trek : The Motion Picture |
| Film: | Star Trek III : The Search for Spock |
| Film: | Star Trek VI : The Undiscovered Country |
| © Graham & Ian Kennedy | Page views : 21,523 | Last updated : 2 Apr 2014 |
