Patty and Richard's argument at the front door reveals a view of Manhattan skyscrapers. The Lane family home has a real NYC address, 9 Remsen Street, on a waterfront cul-de-sac in Brooklyn Heights, and the view over Richard's shoulder is that of the building at 60 South Street, near the Wall Street Ferry.
Richard reveals that his middle name initial is 'L', but doesn't reveal what the letter stands for.
This is the first time Sue Ellen Turner's name comes up. Her character pops up multiple times throughout the series as Patty's chief nemesis. Kitty Sullivan plays the part in a recurring role, first appearing later during season one in A Slight Case of Disaster (1964).
Uncredited here, Joey Trent plays Craig, Cathy's date for the dance. He appears multiple times in the role during the first season.