Yes, there will be a show program that gives a list of all the vendors and often with addresses, phone number and web sites and then a map of the show floor showing where the vendor is located.
It will be useful for you to make notes on the program when you find a vendor you might want to go back to and what specifically they had that interests you.
Having been a vendor for many years, I have been asked so many time "do you know who sells such and such....I was there but can't remember where it was". There may or may not be literature or catalogs for you to pick up so make notes.
Be sure to ask if they ship to Canada if you are interested in later mail order and also the method and special consideration in shipping to Canada.
What show are you attending?
My daughter owns The Stencil Co and she will be vending at the Vermont show in June. I'll be in the booth helping her.