| Gertrude Käsebier Happy Days [Camera Work, no. 10, pl. 04] 1905 (photogravure) Photogravure 7 13/16 × 6 3/16 ins (19.9 × 15.7 cm) (image) 10 × 7 5/8 ins (25.4 × 19.3 cm) (sheet) Philadelphia Museum of Art From the Collection of Dorothy Norman, 1967, Accession Number: 1967-285-253 LL/71884
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