Lincoln Ellsworth, a pioneer in arctic and antarctic exploration by air, and first to fly completely across both polar regions, died on 26 May 1951 following a heart attack. He was in his 72nd year. A restless desire to see new lands, cross new seas, and to expand earth's frontiers was the expressed motive in all that Ellsworth did. Born of wealthy parents, he decided early in life to devote himself to exploration, and gave up a life of leisure to fit himself to lead expeditions by aircraft, ship, canoe, submarine, dirigible, and on foot to Alaska, the Canadian Northwest, the Andes, and both polar regions. His expeditions were not mere stunts for fortune or self glory, but, in spite of the quiet way in which he organized them, they were oft...