- See Mason for other articles with titles that contain, either by relationship or by coincidence, this character's surname.
In 2268, Mason was assigned to Federation starship USS Enterprise. He was one of the crewmen selected for a theoretical landing party to survey planet Alpha Carinae II. Mason was selected by both the M-5 computer and Captain James T. Kirk for the team, based on prior experience surveying 29 biologically similar planets. (TOS novelization: The Ultimate Computer)
- In TOS episode: "The Ultimate Computer", the scene where Mason's name was mentioned had the name Phillips in its place. This change was presumably derived from a revision of the script supplied to novelist James Blish.