http://www.ebay.com/itm/1939-NEW-YORK-N ... SwgQ9Vgfne" onclick="window.open(this.href);return false; - a whole series on Ebay kept by New Have RR employee...would be a motherlode for a NHRR historian/archivist...
I didn't have the time to really go through this stuff but from what I saw I have doubts that they would have nearly the value of old timetables or other railroad materials such as rulebooks, freight symbol books, engine house or station records. Switch lists and stuff like that might have some interest but it would not fit in my collection.
Noel Weaver