Monday, Aug. 15, 2016 6 p.m. to 7:30 p.m. Location: Southwest Harbor Public Library, 338 Main Street, Southwest Harbor, Maine For more information: 207-244-7065; swharbor.lib.me.us Senator George Mitchell will speak about his memoir, The Negotiator: Reflections on an American Life, at the Southwest Harbor Public Library, Monday evening, August 15, …