An 1880 view downstream from the William Street bridge of some of the shops and factories that got their power from the Willow Street mill-race, which produced 800 horsepower. A view from Dundas Street towards Willow Street c. 1875. The large stone building in the foreground is part of the Knitting Mill of Clay and McCosh. Upstream from this factory were eight other factories and shops, all of which got their power from the mill-race.