Provenance: 1985-2005, Museum Ludwig, Agfa Foto-Historama, Köln, Image credits: Rheinisches Bildarchiv (rba_c014389) 1955-2005, Agfa Foto-Historama, Leverkusen (Purchase 1955) until 1955, Erich Stenger, Berlin Alexander von Humboldt album, 1844 -03
Owner:Museum Ludwig (previously Agfa Foto-Historama)