Leonard Nimoy and William Shatner played together in this show just prior to starting [linktt0060028=]. Additionally, Joseph Sargent directed The Corbomite Maneuver (1966).
Madame Kurasov is shown reading a magazine called Elite. Four years later this very same prop magazine would be seen Joseph Sargent, where Mr. Spock would come across it in a pile of magazines. This magazine Elite is also shown at the beginning of some episodes of Mission: Impossible (1966) with Cinnamon Carter, played by Barbara Bain on the cover.