The image above comes from a book published in 1913. The image above shows the Marshall Foundry. The foundry location at 940 Assumption, in the block just east from Parent, did infrastructure castings, like sewer grates, and manhole covers.
Business seemed to go well for a long while, as shown in the photo above from 1955. Based on the images in the yard, they kept doing the same work, as there are a pile of manhole covers in the front yard.
Three years after the last photo, in 1958 the same kind of stock is in front yard.
In January 1960, Alverdo Marshall, the owner of the foundry passed away at the age of 81.
It looks like it continued to Operate until about 1968-1969. Other businesses operated there through the late 1970s. It looks like somewhere around 1983 the property became vacant, and ended up being owned by the City. Perhaps a tax foreclosure? I couldn’t really decipher what occurred based on the land registry books. Either way the property remains a vacant lot to this day.