Guillaume-Benjamin-Amand Duchenne (de Boulogne)

Figure 7: Étude du méchanisme et de l'expression du muscle frontal chez un vieillard: à droit, attention; à gauche, repos

c. 1856, printed 1862
Albumen print from glass plate negative

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In the collection of Cleveland Museum of Art, Cleveland · as of August 2026

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