Judging from the cars, it was taken in the 1950s. The water tower says VO ... but that's about all I can make out on it. Notice that one of the train cars says "Soo Line" and I'm not even sure they serve this region, though freight trains can be made up of cars from all over.
So: Where is (or was) this place, and what did they make there?
Does anybody recognize it?