Found this in an antique store last year and forgot about it. As far as I can tell, this is from the early 50s, an N&W J-type out of Roanoke Shops.
On the back:
Norfolk and Western Railway’s streamline, all-coach, daylighter along New River in Virginia
Pub. by Roanoke Photo Finishing Co., Roanoke, Va.
Dextone Made Direct from Kodachrome and Ansco Color by Dexter Press, Pearl River, N. J.