Elisha T. Loring (1804-1889) was born on Cape Cod and began his career in the Chilean tin and copper trades, moving to Boston in 1839. His house at 21 Mill Street in Dorchester’s Harrison Square neighborhood was built in the early 1840s, showcasing his wealth and stature in the community. Based out of this house, Loring made a large fortune in the Lake Superior mines, also known as the Calumet and Hecla mines. By 1862 he was the treasurer to the Pewabic and Franklin Mining Companies, and a decade later is listed as “President, National Dock Company.” Loring’s Dorchester mansion is Greek Revival in style and consists of a three bay by three bay main block and a substantial rear ell. The house’s original clapboards were replaced by wood shingles sometime in the 20th century. The main elevation’s pedimented center pavilion exhibits a small front porch whose Ionic columns support a heavy, cornice-headed entablature. The porch’s roof is set off by an ornate cast iron railing. The side elevation is unusually wide and culminates in broad pedimented attics containing elliptical lunette windows.