Installed between 1956 and 1961, the stained glass windows illustrate events in the lives of Christ and Mary. They are the work of the celebrated Italian-Canadian artist Guido Nincheri (1885-1973), "the most prolific religious artist in North America" (The Canadian Encyclopedia). Pour more on Nincheri, see: http://www.thecanadianencyclopedia.ca/en/article/nincheri-guido/