sentences:  Although formally dedicated as the Alva Belmont House by the NWP in 1931, the combined name Sewall–Belmont House came into usage by "The Evening Star" newspaper as early as 1942, and by "The Washington Post" in 1974.The Sewall–Belmont House was added to the National Register of Historic Places in 1972, and declared a National Historic Landmark in 1974.In August 2015, Senator Barbara Mikulski (D-Maryland) introduced legislation to authorize the National Park Service to accept ownership of the Sewall–Belmont House should the National Woman's Party agree to transfer it at no cost.