| Frank Eugene Dr. Emanuel Lasker and His Brother [Camera Work, no. 31, pl. 08] 1908 (taken) 1910 (photogravure) Photogravure 6 15/16 × 4 15/16 ins (17.6 × 12.5 cm) (image) 11 × 7 15/16 ins (28 × 20.1 cm) (sheet) Philadelphia Museum of Art From the Collection of Dorothy Norman, 1973, Accession Number: 1973-267-146 LL/71551
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