| Hermann Carl Eduard Biewend Luise Biewend in her Mother's Room, Hamburg 1850, 5 June Daguerreotype, 1/2 plate 15.5 x 10.3 cm (image, sight) 16.1 x 10.8 cm National Gallery of Canada / Musée des beaux-arts du Canada Gift of Phyllis Lambert, Montreal, 1988, Accession number: 30588 LL/77509
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