The New Milford Historical Society seeks to preserve and share the history of New Milford, CT. To that end, the society operates a local history museum with collections including antique toys, an 18th-century cooking hearth, paintings by Woldemar Neufeld (born 1909), and the 1815 Knapp House and its furnishings. The museum is located within four historic structures—a residence, bank, store, and schoolhouse.

The society offers exhibits, period rooms, and learning boxes (traveling trunks) for rental. Admission to the historic schoolhouse is by appointment only.