During Captain Kirk's visit to planet Organia in the year 2267, the Council's chairman, Ayelborne, described Trefayne as "quite intuitive" as an explanation of an application of Organian abilities—Trefayne was aware that eight starships had assumed orbit around Organia, even before Spock was able to verify this with his tricorder. Trefayne announced that these vehicles were using transporters to move personnel to the planet, and that these arrivals carried many weapons, which was the Starfleet landing party's first clue that there was more to the Organians than their appearance as simple humanoids. (TOS episode & Star Trek 2 novelization: Errand of Mercy)
- TOS episode & Star Trek 2 novelization: Errand of Mercy
- TOS novel: Spock Must Die!
- TOS - Strange New Worlds short story: "Reflections (TOS)"
- TOS - Legion of Super-Heroes comic: "Issue 2" (cameo without dialogue)