The Dunbar-Vinton House is a historic house at Hook and Hamilton Streets in Southbridge, Massachusetts, USA. The date of its construction, and its original use, are both the subject of local speculation. The site was reported by 19th century historians to be the site of a school, but whether this building is the school in question or not is unclear. It structurally resembles a small schoolhouse, which lends credence to the theory. It is surmised to have been built by Captain Calvin Clemence, who died in 1828; the school was operated by a Mrs. Dunbar. In 1901, the house was reported to be occupied by Albert Vinton. Architecturally, the building is a small one story brick structure, three bays long, with a rounded arch doorway at the rightmost bay. A small clapboard addition was added at the