The main street that Ilsa runs across is the same one used in I Sing the Body Electric (1962). Located on the MGM backlot in Culver City, it was known as the "New England Street", and is same set that was featured in the Andy Hardy movies, starring Mickey Rooney., Elvis Presley's "Jailhouse Rock", Frank Sinatra's "Some Came Running" and the 1970s musical fantasy "Sgt. Pepper's Lonely Heart's Club Band", starring The Bee Gees, which was the last major film shot there. Much of the MGM backlot had been demolished in 1974, and the remainder, including the New England Street, was pulled down in 1978, soon after filming wrapped on "Sgt Pepper's".
At the beginning of the episode it does not actually show Düsseldorf on the River Rhine. It shows the town of Passau and the River Danube. Passau is located in Bavaria, the south-east of Germany at the border to Austria.
This episode takes place in Düsseldorf, West Germany in 1953 and German Corners, Pennsylvania from August to November 1963.
Claudia Bryar (Frau Nielsen) later played a townsperson in Welcome to Winfield/Quarantine (1986) while Barbara Baxley (Cora Wheeler) later played Dr. Kate Wange in Profile in Silver/Button, Button (1986).