During the episode, there is a radio broadcast of a horse race featuring a horse named "White Shadow." Timothy Van Patten, the director of this episode, played "Salami" for the entire run of the TV series "The White Shadow" from 1978-1981.
In the hospital scene, Margaret is reading the book, The Ivory Tower. The Ivory Tower is an unfinished novel by Henry James, posthumously published in 1917.