New York, Chicago & St. Louis Railroad Company
This excellent medium-size museum, located in Bellevue, Ohio, displays a nice collection of NKP equipment plus locomotives and rolling stock from B&O, N&W, NYC, Milwaukee, PRR, and Wabash lines.
The museum is located only a few miles from Norfolk Southern's huge Bellevue classification yard, the second largest in the country, which features two humps. About 100 trains depart, move through or terminate daily at Bellevue -- many of them passing right beside the museum property.
Link: Official Museum Website
Link: Norfolk Southern Hump Yard