League passport for Russian refugees (left), Fridtjof Nansen (right), Schwarz-Weiß-Photographie, ca. 1924–1930, unbekannter Photograph; Bildquelle: Library of Congress Prints and Photographs Division, LC-USZ62-121987, http://hdl.loc.gov/loc.pnp/cph.3c21987, gemeinfrei.