| J.E. Mayall Portrait of a seated middle-aged man 1847-1855 Daguerreotype, 1/6 plate, hand-tinted National Museums Scotland History of Science, Howarth-Loomes Collection, Museum Reference: IL.2003.44.2.106 LL/68225 Photographer: Professor Highschool (John Jabez Edwin Mayall) of London, 1847-1855.
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