Since the series was cancelled by Showtime on November 30, 2016, this is the series finale.
The working title for this episode was "A Private Affair". It was even listed under that title in TV Guide and other publications.
Both David Walton (Bram) and Lizzy Caplan (Ginny) were in several episodes of New Girl. In season 1, Lizzy was Nick's girlfriend Julia and in season 2 and 5 David was Jess's boyfriend Sam.
When Bill and Virginia Marry, it's supposed to be in late 1969 (in reality it was in 1971). At that time, both William and Elizabeth Masters would have been 54 years old (both having been born in 1915), and Virginia Johnson would have been 44 (born in 1925).
At the time this was filmed, Michael Sheen (William Masters) was 47 years old (a 10-year discrepancy), Lizzy Caplan (Virginia Johnson) was 34 years old (also a 10-year discrepancy), and Caitlin FitzGerald was 33 (a 21-year discrepancy).
Additionally, the Masters' children would have been adults (18 and 19 years old), and not the 9 and 13 year-old adolescents depicted here.
Additionally, the Masters' children would have been adults (18 and 19 years old), and not the 9 and 13 year-old adolescents depicted here.