For information about railroad related "paper," check out http://www.railroadiana.org/
This is a vast collecting area for those who enjoy train timetables, passes, tickets, business forms, etc. etc. etc. all connected to American rail transportation.
As a railroad enthusiast, I'm glad to help if someone has a specific question.
This is such a fun area of vintage to explore... vintage train ephemera!
I live in Philly and we have this monster in one of our Museums. I would love to find some vintage ephemera for this!
This is a vintage image of them building a temporary train track to get it inside the building!
Great Blog on this subject ...