The Dorchester Historical Society celebrates nearly four centuries of Dorchester life through its collections and programs. Founded in 1843 and incorporated in 1891, DHS seeks to preserve and share the history of Dorchester, promote the preservation of historic buildings and sites, care for and exhibit articles of historic interest, and further education about and in the community.
Run by an entirely volunteer board, DHS offers monthly programs and publishes monographs relating to Dorchester history. The Society owns three historic houses, dating from 1661, 1765 and 1806, and a c. 1850 barn; it also holds and exhibits collections of written and printed materials,
furniture, paintings, items from the community's agricultural and industrial past, and more.