This Musical is referred to by The Gold Violin part of Mad Men Season 2
Harry brags about having a meeting with Mr. Cooper. He tells the guys that Mr. Cooper asked to meet with him and only him. Kinsey teases Harry by asking "Isn't that from West Side Story?".
Set in New York City in the mid-1950s, the musical explores the rivalry between the Jets and the Sharks, two teenage street gangs of different ethnic backgrounds. The members of the Sharks from Puerto Rico are taunted by the Jets, a white working-class group. The young protagonist, Tony, one of the Jets, falls in love with Maria, the sister of Bernardo, the leader of the Sharks.