The Manchester Historical Society was founded in 1886 and is located in the historic Trask House, which was built in 1823. The museum preserves local history and features antique furniture, art, numerous documents and artifacts. The organization also chronicles Manchester's maritime history and the Gilded Age period during which the town was a popular wealthy vacation spot.
The Trask House was built by Abigail Hooper who ran a general store and millinery shop in the house. She eventually married Captain Richard Trask who was a wealthy merchant. The museum also owns and manages the Seaside No. 1 Firehouse, which was built in 1885 to house the town's first horse-drawn fire engine. Today, it features two antique fire engines and firefighting equipment and memorabilia; it also features police memorabilia, as the building served as a police station for many years. The historical society acquired the Trask House in 1925 and the firehouse in 1970.