Jack Soo's final appearance of the season, beginning his battle with esophageal cancer.
This is the first of three episodes in which Mari Gorman appears as Officer Rosslyn Licori. Later she would also appear twice as Naomi Bender, the long-suffering wife of Bruno Bender (Stanley Brock), who was also in this episode.
Harris is telling Barney how Dietrich corrected him when he stated that he wondered what Cab Calloway was doing now. They corrected Harris that it was actually Dooley Wilson who was playing the piano.