Several platforms offer access to historical newspapers. To identify which platforms would meet your needs, LibrarySearch's Newspaper page could be helpful.
You may want to check Bowling Green State University's Library guide, which has compiled a list of Historical Canadian Newspapers Online: https://libguides.bgsu.edu/CanadianNewspapers.
★ Microfilms in the UTM Library
"While the amount of online content continues to grow, newspapers on 35mm microfilm remain a viable strategy for the preservation of print newspapers" ("Microforms in Libraries and Archives" by the Association for Library Collections & Technical Services, a division of the American Library Association).
There are microfilms on the ground floor of the UTM Library. Before you use it, please read the guide below:
★ Digitized Newspapers by the UTML Archives & Special Collections