In which year was the historic house and museum that the Maine Historical Society operates from designated as a National Historic Landmark?
Maine Historical Society The Maine Historical Society is the official state historical society of Maine. It is located at 489 Congress Street in downtown Portland. The Society currently operates the Wadsworth-Longfellow House, a National Historic Landmark, Longfellow Garden, the Maine Historical Society Museum and Store, the Brown Research Library, as well as the Maine Memory Network, an online database of documents and images that includes resources from many of state's local historical societies.
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.