During the 1800s and 1890s, three butter factories were established in Sunbury to support the local dairy industry. Farmers from the surrounding areas brought their cream to the factories to be processed into butter. the butter was sold as Empire Butter. Sunbury Secondary College, in Riddell Road, now occupies the site of the former Rupertswood Butter Factory.Dairy farming was an important agricultural industry in the Sunbury area for almost 150 years.A black and white newspaper photograph of a weatherboard commercial complex. One has a covered in front verandah with windows on three sides and another building to the side has a chimney. Aman is in a small horse and cart at the side of the building. The photograph was downloaded from the Trove nla collection.Rupertswood Butter Factoruyrupertswood butter factory, dairy farms, sunbury, rupertswood, sunbury secondary college