When Helen Smith mentions Joseph Goebbels and his deformity to her therapist she is referring to his congenital clubfoot, which caused him to walk with a limp and could not be fixed via surgery.
"Baku" is Kido's alias in the Neutral Zone, and it is also the name of a mythological Japanese creature that devours bad dreams.
Werner Heisenberg was the pioneer of quantum theory and worked on the German nuclear weapons program during WW2.
New York Women's House of Detention at Jefferson Market was at 10 Greenwich Avenue on downtown Manhattan's West Side. The jail building was constructed in 1931 in the art deco style and remains the only art deco prison in history. It closed in 1971 and was demolished in 1973.
There is a very brief shot of Times Square in New York City.
- The iconic illuminated Chevrolet, Kinsey Blended Whiskey, Ruppert and Pepsi-Cola signs have been replaced with an illuminated Nazi banner with the words "WORK WILL SET YOU FREE" above it. (This is a translation of the phrase "ARBEIT MACHT FREI" which appeared above the entrance of Auschwitz and other concentration camps.)
- The Bond Clothing Store is renamed Gerhardt's Clothes for Men (but retains the big Bond sign).
- The Hotel Astor is renamed the Hotel Greater Reich.
- Elephant Walk (1954) is showing at the Astor Theatre (suggesting the digitally modified scene is taken from a 1954 photograph).
- The Criterion Theatre is showing German films.