Excellent! Your pic above is the first I've seen of the front of the building showing it for said context. There is a lot on-line, but mostly inside, and pics of the milk being dumped during an 'infection crisis' that led to a controversy over Pasteurization. (There were profound alternative views, even at that time) What's also profound in retrospect, albeit shouldn't be, is that the bulk of the original supply came from "Dentonia Farm" in Toronto. Don't have pics handy, but looks like something out of Wisconsin today, or the farms of my youth in the Fifties/Sixties. Some things never grow old with farms and barns. Just locations.Here's where you can find various Toronto City Directories online
Again, many thanks for that. I have to be in an organized frame of mind to use those tools, hopefully later.