| Heinrich Kühn Portrait - The Mirror [Camera Work, no. 33, pl. 08] 1911 (photogravure) Photogravure 7 1/4 × 5 5/8 ins (18.4 × 14.3 cm) (image) 10 7/16 × 8 1/16 ins (26.5 × 20.5 cm) (sheet) Philadelphia Museum of Art From the Collection of Dorothy Norman, 1973, Accession Number: 1973-267-228 LL/71937
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