Louisville and Nashville No. 1966 was a class M-1 "Big Emma" built in ??? by the Baldwin Locomotive Works for the Louisville and Nashville Railroad. Today, her tender resides at the Southeastern Railway Museum, because the engine herself was scrapped.
The "Big Emma" 2-8-4 Berkshire steam locomotives are completely extinct, except for two tenders, one of which is 1966's.
1966's tender on display at the Southeastern Railway Museum.