I have the 1952 poster "Hey Fellows! Let's Build A Railroad!" that came with my first set, now laminated and hanging on the wall above my work bench. I used to have a complete collection of catalogs from 1952 - 1966. Don't know where they disappeared to during a move. And of course, I still have my Bantam Book of Model Railroading - 6th Big Edition.
If you come to York, there's a meeting of paper collectors, and plenty of sellers in the Halls.