Live coverage of the Gemini VIII splashdown meant that 1x24 episode "His Majesty Smith" was postponed. CBS received over 2000 calls of complaint that night.
During Smith's Final Audience in the presence of the Robinsons, Nexus describes Smith as "His most exalted Majesty, Defender of Rights, Sword and Buckler of Liberties, Most sublime and willing Sacrifice, Zachary the First, King of Andronica". Neither the Robinsons nor Smith notice the word "sacrifice".
The entrance and exterior of the Andronican spacecraft are the same as the Keeper's ship in The Keeper: Part 1 (1966)/The Keeper: Part 2 (1966).
One of the props inside the Andronican ship was also used as the giant derelict ship in The Derelict (1965).