Englische Missionare in Neuginea, Schwarz-Weiß-Photographie, ca. 1919, unbekannter Photograph, Keystone View Company Meadville, USA; Bildquelle: Library of Congress, Prints and Photographs Division Washington, DIGITAL ID: (b&w film copy neg. of half stereo) cph 3a47053 http://hdl.loc.gov/loc.pnp/cph.3a47053.