The Song "Babylon" heard in the club scene is an arrangement of Psalm 137 written by Lee Hayes (of the Weavers) and Don McLean and released by McLean on his American Pie album in 1971.
On the cover of the Israeli magazine shown by Salvatore to Don, the woman is Claudia Cardinale, not an Israeli girl.
Earlier in the episode, the year is mentioned to be 1960. Later in the episode, Joan Halloway uses the phrase "The medium is the message." This phrase was coined by Marshall McLuhan in Understanding Media: The Extensions of Man, published in 1964.
Joan Holloway states, "You know what they say, 'the medium is the message.'" However, Canadian philosopher Marshall McLuhan would not coin the phrase "the medium is the message" until 1964. Seeing as this episode takes place in 1960, Joan is a little early to be busting out this particular piece of communication theory.