It is old and the only one i could find. There is one newer circa 1994. but it is a map of TN area if that is what your looking for. random website "7) Willoughby, at KD milepost C275.8, is an interlocked crossing with the Norfork Southern's Knoxville-Chattanooga line. This is NS's Tennessee Division and sits at their milepost 132.3A" circa 2001 " Harriman, TN in middle eastern TN, about 40 min. west of Knoxville on I40. NS's Tennessee division from Knoxville joins the double track Kentucky Division mainline at Harriman Juntion, 40-50 trains a day during the peak season." From worthapedia seller "The Tennessee Division is no more... NS folded the Kentucky and Tennessee Divisions into the new Central Division."