This episode was shot before "The Lucky Charm", but aired after it. This is made known by the fact that in "The Lucky Charm", Hilary opens her first paycheck, but in "The Ethnic Tip", she is asking Geoffrey about what to say at her job interview for the same art gallery.
The idea that spirituals contain coded messages is considered to be folklore by many scholars. It is uncertain whether "Follow the Drinking Gourd" existed before the 20th century.
Aired 3 Nights Before Operation Desert Storm Began