If you are ever in Roanoke, Virginia do not miss the Link Museum. I was attending a conference at the hotel across the street from it a few years ago and ended up spending an entire afternoon at the museum. The museum is in an old train station, very close to the Norfolk Southern Roanoke Maintenance yards.
http://www.linkmuseum.org/
The documentary was well done, I saw it at the FullFrame documentary festival a year or two ago. Really sad how that story played out,
Cheers,
Alan