Dodgson's photograph of Henry Acland's "Skeleton of Tunny-fish (foreshortened)" was taken in June 1857 at the Anatomical Museum, Christ Church, Oxford. The actual skeleton still exists and may be found in the Oxford University Museum of Natural History. Henry Wentworth Dyke Acland (1815-1900) was Regius Professor of Medicine at Oxford.
For more details, see Lewis Carroll Photographer by Roger Taylor and Edward Wakeling, (Princeton University Press, 2002), p. 136.
