| Maull & Polyblank Portrait of Professor Richard Owen [Photographic Portraits of Living Celebrities] 1856 Albumen print, from wet collodion on glass negative Universiteitsmuseum Utrecht Copyright © Universiteitsmuseum Utrecht (UMU-UG-2) LL/25780 See also: Rijksmuseum, Object number: RP-F-2001-18-1
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