Here’s today’s Final Jeopardy (in the category Phrase Origins) for Thursday, October 3, 2019 (Season 36, Episode 19): The OED’s first citation for this phrase referring to a region of the U.S. is from a Durant, Oklahoma newspaper in 1936 (correct response beneath the contestants)
https://thejeopardyfan.com/2019/10/final-jeopardy-10-3-2019.html

