| John Stewart Portrait of Sir John Herschel, Bart. F.R.S. 1855 (before) Albumen silver print (?), waxed 11.6 x 9.1 cm (oval) National Gallery of Canada / Musée des beaux-arts du Canada Purchased 1973, no. 20515.1 LL/39000 This photograph is available through CyberMuse - cybermuse.gallery.ca (Accessed: August 2010).
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