On 11 Sept. 1916, Saunders launched the self-service revolution in the United States by opening the first self-service Piggly Wiggly store, at 79 Jefferson Street in Memphis, Tennessee. Saunders had renovated his United Store, removing old countertops, and replacing them with characteristic turnstiles at the entrance and exit, and cabinets arranged along a continuous path, which ended at a cashier stand complete with adding machine and cash register. The 1,125 sq ft store included a front lobby, the continuous-path middle salesroom, and rear stockroom.