| Unidentified photographer/creator Pierre Auguste Saunois 1844, 13 May Daguerreotype Private collection of W. & T. Bosshard Daguerreobase: BOS-2957, Creative Commons – Attribution Non-commercial, No derivatives (BY-NC-ND) LL/73795 Portrait of a man sitting in a chair on a table with scientific instruments; in front of a neutral background.
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