Several times a wagon with a "Ideal Bread" sign on the side is seen. The property for the Ideal Bread Company main factory was originally sold to 3 bakers in 1909 with the Ideal Bread Company being officially formed in 1914. This story takes place in 1900.
When Murdoch is screening the surveillance footage, you can clearly see lines of resolution which is only visible in digital technology, which was not available at the time.