Roald Amundsen kolem roku 1908. Ludwik Szaciński - Roald Amundsen's The North West Passage: Being a Record of a Voyage of Exploration of the ship Gjøa, 1903-1907; Roald Amundsen. New York: Dutton, 1908. National Library of Canada, Public Domain, https://commons.wikimedia.org/w/index.