Thelma Ritter's final film; her screen debut, Miracle on 34th Street (1947), was also directed by George Seaton, making Ritter one of a handful of actors to be directed by the same person in both their first and last films.
Noteworthy for its depiction of a COVID like situation more than a half century before the actual situation.
George Peppard and Mary Tyler Moore were both involved in adaptations of Truman Capote's novella Breakfast At Tiffany's. Peppard appeared in the 1961 film adaptation, and Moore starred in a musical adaptation that reached, but did not open, on Broadway in 1966.