Real world article
(written from a production point of view)
Libby Erwin is an actress who played the Technician in the Star Trek: The Original Series third season episode "The Lights of Zetar". She filmed her scene on Monday 11 November 1968 at Desilu Stage 10.
Erwin appeared as the admitting nurse in the TV movie Quarantined (1970) which featured Susan Howard who played Kang's wife in another third season episode, "Day of the Dove". Joseph Bernard, who appeared in the second season episode "Wolf in the Fold", also had a small part in the film. Erwin's other known acting appearance was in an episode of Maude (1975), with Adrienne Barbeau.