The J. Paul Getty Museum
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The J. Paul Getty Museum: image dedicated to the public domain under Creative Commons Zero (CC0), stated on the media record itself ('Rights for Media'), with download clearance.
Félix Teynard. El-Kab (Éléthya). Vue Générale de l'Hémi-Spéos, negative 1851–1852; print 1853. The J. Paul Getty Museum.