In which year was the historic house and museum that the Maine Historical Society operates from designated as a National Historic Landmark?
Wadsworth-Longfellow House The Wadsworth-Longfellow House is a historic house and museum in Portland, Maine, United States. It is located at 489 Congress Street and is operated by the Maine Historical Society. It was designated a National Historic Landmark in 1962, and administratively added to the National Register of Historic Places in 1966. The house is open daily to public from May through October (half days on Sundays). An admission fee is charged.
Robert Carleton House The Robert Carleton House is a historic house on North Main Street in Sangerville, Maine. Built c. 1819, it is one of the oldest surviving buildings in Piscataquis County. The 2-1/2 story wood frame structure, with vernacular Federal style, was built by Robert Carleton on land purchased from his brother, a worker in the nearby fulling mill. It was listed on the National Register of Historic Places in 1975.