Fort Fairfield, Maine. Exchange Hotel, ca. 1915 , The Fort Fairfield Exchange Hotel on Main Street in about 1915.  Because of the town's location on the Aroostook River near the New Brunswick border, Fort Fairfield was a central location during the "Aroostook War," a dispute over the boundary between New Brunswick and Maine. The boundary wassettled by the Webster-Ashburton Treaty of 1842. USA. Northern Maine, New Brunswick, Old Pictures, Main Street, War, River, Mansions, History, House Styles