Here's a roster shot from a slide I purchased from eBay. This shows CN 3104 in Toronto - not sure where in Toronto but the VIA equipment around it might indicate Spadina.
CN 3104 was purchased as part of a lot of 30 units (3100-3129) in 1959. This series was equipped with a steam line pipe (but not a steam generator) so they could be used in passenger service. (source)
Railpictures.net has one photo of CN 3104, at Windsor Ontario on May 21, 1981.