The final diary entry before the vacation ends with the sentence "My athlete's foot is much better".
This episode was the 30th episode produced and the 24th broadcast.
When Commander Wilbur Zero and Lieutenant Ninety launch Fireball XL1, old footage of Fireball XL5 launching is used.
There is a picture of Supercar (1961) on the cover of the copy of 'Stargazing' that Commander Zero is seen reading.