A proprietor may keep the records required by this part at the distilled spirits plant where operations or transactions occur or at a central recordkeeping location maintained by the proprietor. If a proprietor keeps the required records at any location other than the distilled spirits plant where operations or transactions occur, the proprietor must provide a letterhead notice to the Director, National Revenue Center, of the location where the records are kept. (26 U.S.C. 5207)