Game Scores from past seasons

Can anybody tell me what the best way would be to obtain game scores from past preseasons as well as regular seasons? I have some old fact and record books, but am wondering if there is one accurate source.

There might be one source out there....?
But I have a hunch you need to hit the local library and slog through old newspapers....
I think all the post-season scores are available on this (CFL) website, but I doubt the regular seasons beyond a year or two are.