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.
John Dunlap House The John Dunlap House, also known as Gilman Mansion, is an historic house located at 4 Oak Street in Brunswick, Maine, United States. Built in 1799, it was probably one of Brunswick's grandest houses of the time, built for John Dunlap, a prominent local businessman. It was listed on the National Register of Historic Places in 1979.