This episode was shot a full year after the pilot.
Talia Balsam's first appearance in the series as Mona Sterling, the wife of Roger Sterling. In this role, Balsam gets to act alongside her real-life husband, John Slattery, for the very first time.
According to the season 1 commentary track, the waiters in the opening scene were actual waiters, not actors.
Lowest rated episode of the series.