This is a very recent addition... and a few Western papers have made their way online, including the Vancouver Sun and Edmonton Journal. I'm a fan of this, as the library's microfilm readers are crap! All total, almost 18,000 editions are up online now from 1888 to 1987.
Lots of great history, some of it almost completely forgotten:
As long as there has been hockey in the west, there have been complaints about travel distance (1924)
Did we really elect a TV personality as mayor? (1980, Edmonton Journal)
We got the Olympics! (1981)
Stampede celebrates a record 520,000 visitors, and yes, it always rains at Stampede (1956)