Theme from A Summer's Place by Percy Faith and his Orchestra is playing during Don and Bobbie's drive to the beach. A Summer's Place was a blockbuster 1959 film about forbidden love that starred Sandra Dee.
Don is briefly arrested and fined in New York for having a blood alcohol content of .15%. As of 1996, New York had lowered the allowable percentage; any blood alcohol content over .05% will initiate a criminal case.
Bobbie Barrett reads that Marilyn Monroe will make an appearance at Madison Square Garden to celebrate President John F. Kennedy's birthday. This a reference to Marilyn's infamous breathy and sexy rendition of "Happy Birthday" for the President.
Joan Holloway: Aren't you darling? You're going to be gangbusters.
Bobbie: This is America, pick a job and become the person who does it. (advising Peggy to be more ambitious)
Peggy: You'll have to believe me that I'll forget this. I don't want you treating me badly because I remind you of it. (assuring Don she won't tell his secrets
Don: Get out of here and move forward. This never happened. It will shock you how much it never happened.
Pete: Either you make it through this thing or you keep it to yourself. (responding to his wife's distress about their fertility issues)
The song that Freddie Rumsen is playing on his zipper is Eine Kleine Nachtmusik by Mozart.