This is the first time we see that IRAC may have deduced Diana's double identity, when it addresses her as "Miss Prince-ess" (Andros has spent the entire two-parter addressing her as "Princess").
Lynda Carter mostly wore wigs and hair pieces during the first 10 episodes of season 2. This episode marks the first of the season where she wore her own hair. It was longer and straighter than the darker, curlier wig used in episodes prior.
Wonder Woman mentions she last saw Andros (Dack Rambo) in 1943. This adventure has never been documented. She met Andros' father (Tim O'Connor) in September 1942 in Judgment from Outer Space: Part 1 (1977). Apparently the elder Andros returned to Earth just one year later and introduced his son to Wonder Woman at that time.