James Dwight Dana House // 1849

The James Dwight Dana House at 24 Hillhouse Avenue in New Haven, Connecticut, is a landmark early example of an Italianate style residence designed by a famed 19th century architect. Built in 1849 from plans by architect Henry Austin, the house was constructed for owner, James Dwight Dana (1813-1895) and his new wife, Henrietta Silliman and possibly funded by her father, Benjamin Silliman, a Yale professor who was considered “The Father of Science in America”. James Dwight Dana’s education in geology, in addition to his studies with his father-in-law, Professor Silliman, extended to the four-year United States Exploring Expedition between 1838–1842), in which Dana served as the staff geologist and mineralogist, exposing him to a wide-ranging variety of geological formations and minerals. Upon his return to New Haven, he married Silliman’s daughter and then moved into this stately home. Later in his career, Dana was responsible for developing much of the early knowledge on Hawaiian volcanism. In 1880 and 1881 he led the first geological study of Hawaii. The James Dwight Dana House has a three-bay front facade, with a single-story porch extending across its width, supported by wooden columns with unique capitals. The shallow roof has broad, overhanging eaves sheltering a unique corbelled brick cornice. The building was added onto in 1905 with similar architecture and was purchased by Yale in 1962. Today, the building is preserved by the University and houses the Institution for Social & Policy Studies (ISPS).

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