There's another pre-DS appearance of Diana Millay this coming Monday on MeTV+, this time in an episode of 77 Sunset Strip from 1964.
If you have access to MeTV+, please note that the eps currently airing are in the show's 6th and final season when things got really weird. All cast members were dropped save for Efrem Zimbalist Jr., and his office is completely different, yet the title of the show remains the same, which makes zero sense. It also lost all its kookiness, not to mention Kookie (Edd Byrnes) himself. The popular theme song is also gone.
"Alimony League" airs Monday, December 12 at 6 pm Pacific, 9 pm Eastern. If the show is available for streaming anywhere, it's news to me.