I know that there is a book that you can get (they've had it at the Coles in TD) that lists the value of Canadian currency . . . I can't remember what it's called . . . I'll ask my sister and let you know.
Also, there is a guy that sometimes appears on BT that has done some segments on currency value. He has a website and may be able to help or point you in the right direction.
Brian Lehman