When the states of Georgia, Mississippi, Alabama, and Tennessee grew short of arms in 1863, Governor Shorter of Alabama and President Jefferson Davis persuaded Major O. O. Nelson of Tuscumbia, Alabama, to organize a company to erect a Gun Shop. Originally erected in Dickson Station, Alabama, the shop was soon moved to Rome, Georgia, where it remained for several months. When the advance of Federal troops made that location untenable, the Gun Shop was moved to this site, where it was operating at full capacity at the close of the war in 1865.
GHM 135-6 Georgia Historical Commission 1958
Plaque courtesy Lat34North.com.
Original page, with additional info, here.
Photo credit: David Seibert.