This marked the first time that Barbara Gordon's name was mentioned. Of course, she would not only become a regular character (played by Yvonne Craig), but she would also take on the crime fighting identity of Batgirl.
In the background of King Tut's lair, there is a pink box marked "stamps" left over from the Colonel Gumm two-parter A Piece of the Action (1967) and Batman's Satisfaction (1967) (which guest starred the Green Hornet and Kato) and also a green box with a question mark from the last Riddler two-parter Batman's Anniversary (1967) and A Riddling Controversy (1967).
Lee Meriwether, who played Lisa here previously played Catwoman / Miss Kitka in the Batman movie filmed between Seasons 1 & 2 when Julie Newmar was unavailable.
Both Grace Lee Whitney and Lee Meriwether appeared on Star Trek although not in the same episode.
Not only do Lee Merriwether and Grace Lee Whitney appear in Star Trek TOS, but so does Lloyd Haynes (2nd pilot Where No Man Has Gone Before)