| Hermann Carl Eduard Biewend Robert Biewend 1851, 8 June Daguerreotype, 1/6 plate 7.3 x 5.9 cm (image, sight) 8.1 x 7.1 cm National Gallery of Canada / Musée des beaux-arts du Canada Gift of Phyllis Lambert, Montreal, 1988, Accession number: 30586 LL/77506
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