Although this blog's focus is the UK and Ireland, many Canadians also have roots in Eastern Europe. Connecting Canadians: Canada’s Multicultural Newspapers Beta Website has links to images of newspapers, no text search capability, from Croatian, Estonian, Finnish, Hungarian, Polish, Serbian, Ukrainian, Yugoslavian, Latvian, and Lithuanian newspapers. It's at www.connectingcanadians.org/en/content/home
The site also has links to other resources.
Thanks to Marian Press for the tip.