Title: The centennial of S.A. Andrée's North Pole expedition
Subjects: Swedish, Balloon ascensions, Congresses, Aerial exploration, Andrée Polar Expedition (1897), Discovery and exploration, Research
Places: Antarctica, Arctic regions, Polar regions
People: Salomon August Andrée (1854-1897), Knut Hjalmar Ferdinand Frœnkel (1870-1897), Nils Strindberg (1872-1897)