Born in Canada, Hannah DeLong arrived in St. Paul about 1885 as a widow with three children. She set up a dressmaking business in St. Paul's Mannheimer Block, moving several times in the area of Third and Wabasha in the years she conducted her business. At least one of her daughters, Francis, worked with her in the business. She also advertised her dress cutting school, dealt in dry goods and carried a line of fashionable patterns by Annie Jenness Miller, an advocate of artistic reform in women’s dress.
Two interchangeable evening bodices made with the same fabric carry Mrs. DeLong's label. Mrs. Maurice Auerbach wore the bodices with a matching skirt that did not survive.