[POLAR EXPLORATION]. A group of 4 volumes related to American exploration of Antarctica. Philadelphia: The American Philosophical Society, 1939-1945. 4 4to volumes. Publisher?s printed wrappers or later cloth bindings (some wear, soiling, creasing, text toned, previous owner?s markings or ink stamps). FIRST EDITIONS. Titles include: The Discoveries of Antarctica within the American Sector, as Revealed by Maps and Documents; Reports on Scientific Results of the United States Antarctic Service Expedition 1939-1941 (3 copies, one in later library binding with library markings).