The New Portland Historical Society operates out of what used to be the Green Schoolhouse and is now simply known as the Historical Society building and helped organize the town's bicentennial celebrations.
Selected New Portland Historical Society images:
- New Central High School, East New Portland, 1963
- Central High basketball team, New Portland, 1925
- New Portland Fair, September 22, 1951
- Graduating class, North New Portland High School, 1897
- Central High School Class of 1958, New Portland
- Students, Green Schoolhouse, New Portland, ca. 1900
- West New Portland Schoolhouse, ca. 1900
- Pines School, East New Portland, 1942
- North New Portland High School ca. 1885