This is the inset map for Lebanon from the 1957 official state highway map. Numbered routes shown on this map were US 66, Missouri 5, Missouri 64, and Spur Route 64 (in red); and Missouri 32 (in dark blue). The notation along the dotted line indicates the "new location [for] Rte. U.S. 66 under const." That route was completed by 1958, with the former route of US 66 becoming Business US 66.