Jerry Seinfeld commented that the references to Schindler's List (1993) were included after learning that Steven Spielberg got so depressed while filming the movie that he would watch tapes of Seinfeld episodes to cheer himself up.
The framed photo on one of Elaine's (Julia Louis-Dreyfus) nightstands is of a young Alice Roosevelt Longworth, daughter of President Theodore Roosevelt.
Signs of Monet's failing eyesight due to cataracts are evident in paintings as early as 1908.
Barney Martin (Morty) and Sandy Baron (Jack) also worked together in the episode Jerry's Deli (1992) of the TV show Life Goes On (1989).