After the 1918 Armistice with Germany, Ellwood Wilson, a Canadian forester employed by the Laurentide Company in Quebec, realized that airplanes could be used to spot forest fires and to map forested areas. In early 1919, after Wilson discovered that the U.S. Navy was giving Canada several war-surplus Curtiss HS-2L flying boats, he asked to borrow two. He then hired Captain Stuart Graham to fly the planes. Graham and his engineer, Walter Kahre, then flew the first HS-2L to Lac-à-la-Tortue on 4 June 1919, arriving on 8 June 1919. The flight had covered 645 miles, the longest cross-country flight executed in Canada at the time. He then delivered the other HS-2L to Lac-à-la-Tortue.