Position of Willcox Reserve, Blue Springs, Tennessee, 1863,
Courtesy of Library of Congress, Geography and Map Division
However, I found it while looking for information on Blue Springs, Bradley County, Tennessee, and it certainly does look like the area of Blue Springs in that county. It matches so closely the modern-day satellite view of the "other" Blue Springs, I would really like to see aerial views of the place it is supposed to represent. Of course, mountains and hills can look similar, but that little curved area beside the name, "Willcox," looks so like a farm that is nestled in the mountains at that other Blue Springs.
Citation for 1863 Blue Springs Map/Drawing:
Orlando Metcalfe Poe and Orlando B. Willcox. [Blue Springs: Tennessee].  Map/Drawing. Retrieved from the Library of Congress, https://www.loc.gov/item/86691125/. (Accessed August 22, 2016.)