Wilma's society friend is Emmy Glutzrock. Wilma seems to know a lot of rich friends (a theme which was picked up on in the movie The Flintstones: Viva Rock Vegas).
Wilma mentions her Charge-A-Plate, the real name of one of the first credit cards.
The clothing designers mentioned are Granitelli (Donatelli Versace?), Jacqui Kennelrock (Jackie Kennedy wore designer clothing), and the House of Crushing Door (Christian Dior).
Barney says that at the charm school he learned to open the door of the car to the ladies and he opens it to Betty, but the car doesn't have any doors.
In the piano scene of the society gathering, Barney is seen in his normal brown suit at some times when he should be in his tuxedo.
Doorman: (announcing Fred and Wilma's arrival) Mr. and Mrs Fred Gallstone.
Fred: That's Flintstone, buddy, Flint! Flint!
Doorman: If you ask me, you've got more gall than you do flint.
This episode was recorded on 5-10-61.